Designing New Functional Materials at the Atomic Scale
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Pre-prints
77. Hidden domain boundary dynamics towards crystalline perfection
Anudeep Mangu, Vladimir A. Stoica, Hao Zheng, Tiannan Yang, Maohua Zhang, Hugo Wang, Rui Zhu, Quynh L. Nguyen, Sanghoon Song, Sujit Das, Peter Meisenheimer, Elizabeth Donoway, Matthieu Chollet, Yanwen Sun, Joshua J. Turner, John W. Freeland, Haidan Wen, Lane W. Martin, Long-Qing Chen, Venkatraman Gopalan, Diling Zhu, Yue Cao, Aaron M. Lindenberg
PNAS (2024)
Published (In-Journal):
($ corresponding author; * equally contributed author)
2024
76. Anisotropic Ferroelectricity in Polar Vortices
Piush Behera Aiden M. Ross, Nirmaan Shanker, Peter Meisenheimer, Mahir Manna, Ching-Che Lin, Shang-Lin Hsu, Isaac Harris, Pravin Kavle, Sajid Husain, Shashank Ojha, Sujit Das, Archana Raja, Lane W. Martin, Sandhya Susarla, Sayeef Salahuddin, Long-Qing Chen, Ramamoorthy Ramesh
Advanced Materials (2024)
DOI: https://doi.org/10.1002/adma.202410149
Matter (2024)
DOI: https://doi.org/10.1016/j.matt.2024.09.018
74. Orientational Switching of Perpendicular Magnetic Anisotropy and Near-Infrared Plasmonic States in SrRuO3 Thin Films: Implications for Spintronic Devices
Jayjit Kumar Dey, Prasanna Das, Sourav Chowdhury, Deepak Prajapat, Daniel Perez-Salinas, Pushpendra Gupta, Garima Kaura, Basanta Roul1, Smriti Bhatia, Simranjeet Kaur, Moritz Hoesch, Manuel Valvidares, Kaushik Sen, Bivas Saha, and Sujit Das*
ACS Applied Nano Materials (2024)
DOI: https://pubs.acs.org/doi/10.1021/acsanm.4c04068
73. Non-equilibrium pathways to emergent polar supertextures
Vladimir A Stoica*, Tiannan Yang*, Sujit Das*, Yue Cao, Huaiyu Wang, Yuya Kubota, Cheng Dai, Hari Padmanabhan, Yusuke Sato, Anudeep Mangu, Quynh L Nguyen, Zhan Zhang, Disha Talreja, Marc E Zajac, Donald A Walko, Anthony D DiChiara, Shigeki Owada, Kohei Miyanishi, Kenji Tamasaku, Takahiro Sato, James M Glownia, Vincent Esposito, Silke Nelson, Matthias C Hoffmann, Richard D Schaller, Aaron M Lindenberg, Lane W Martin, Ramamoorthy Ramesh, Iwao Matsuda, Diling Zhu, Long-Q Chen, Haidan Wen, Venkatraman Gopalan, John W Freeland
Nature Materials (2024)
DOI: https://doi.org/10.1038/s41563-024-01981-2
72. Optical Control of Adaptive Nanoscale Domain Networks
Marc Zajac, Tao Zhou, Tiannan Yang, Sujit Das, Yue Cao, Burak Guzelturk, Vladimir Stoica, Mathew Cherukara, John W Freeland, Venkatraman Gopalan, Ramamoorthy Ramesh, Lane W Martin, Long-Qing Chen, Martin Holt, Stephan Hruszkewycz, Haidan Wen
Advanced Materials 36, 2405294 (2024)
DOI: https://doi.org/10.1002/adma.202405294
71. Metamorphosis of topological spin structures
Jayjit Kumar Dey, Sujit Das*
Nature Physics: News and Views (2024)
DOI: https://doi.org/10.1038/s41567-024-02514-z
70. Enhanced polarization switching characteristics of HfO2 ultrathin films Via acceptor-donor co-doping
Chao Zhou, Liyang Ma, Yanpeng Feng, Chang-Yang Kuo, Yu-Chieh Ku, Cheng-En Liu, Xianlong Cheng, Jingxuan Li, Yangyang Si, Haoliang Huang, Yan Huang, Hongjian Zhao, Chun-Fu Chang, Sujit Das, Shi Liu*, Zuhuang Chen*
Nature Communications 15, 2893 (2024)
DOI: https://doi.org/10.1038/s41467-024-47194-8
69. VO2 film decorated with MXene interface for lower power triggered terahertz modulation
Daoyuan Wang, Yunfeng Wang, Xue Chang, Jiang Li, Tangdong Feng, Jayjit Kumar Dey, Basanta Roul, Xueguang Lu, Lianghui Du, Zhaohui Zhai, Hongfu Zhu, Wanxia Huang, Sujit Das, Fuhai Su, Li-Guo Zhu, Qiwu Shi
ACS Applied Materials & Interfaces 16, 10886–10896 (2024)
DOI: https://doi.org/10.1021/acsami.3c16252
68. Antiferroelectric Oxide Thin-Films: Fundamentals, Properties, and Applications
Yangyang Si, Tianfu Zhang, Chenhan Liu, Sujit Das,* Bin Xu, Roman G Burkovsky,*, Xian-Kui Wei,,* Zuhuang Chen,*
Progress in Materials Science 101231 (2024)
DOI: https://doi.org/10.1016/j.pmatsci.2023.101231
2023
67. Low voltage-driven high-performance thermal switching in antiferroelectric PbZrO3 thin films
Chenhan Liu, Yangyang Si, Hua Zhang, Chao Wu, Shiqing Deng, Yongqi Dong, Yijie Li, Meng Zhuo, Ningbo Fan, Bin Xu, Ping Lu, Lifa Zhang, Xi Lin, Xingjun Liu, Juekuan Yang, Zhenlin Luo, Sujit Das, Laurent Bellaiche, Yunfei Chen, Zuhuang Chen
Science 382, 1265-1269 (2023)
66. Superior Energy Storage Performance in Antiferroelectric Epitaxial Thin Films via Structural Heterogeneity and Orientation Control
Tianfu Zhang, Yangyang Si, Shiqing Deng, Hailin Wang, Tao Wang, Junda Shao, Yijie Li, Xudong Li, Qianxin Chen, Chenhan Liu, Gaokuo Zhong, Yan Huang, Jun Wei, Lang Chen, Sujit Das, Zuhuang Chen
Advanced Functional Materials 2311160 (2023)
DOI: https://doi.org/10.1002/adfm.202311160
65. Tunable W5+ Absorbance in Laser Floating Zone Grown Bismuth Tungstate
Lucas A. Pressley,* Mekhola Sinha, Maxime A. Siegler, Noah Edmiston, Shannon Bernier, Austin M. Ferrenti, Sujit Das, Ramamoorthy Ramesh, Satya Kushwaha, and Tyrel M. McQueen
J. Phys. Chem. C (2023)
DOI: https://doi.org/10.1021/acs.jpcc.3c04645
64. Strain effects on stability of topological ferroelectric polar configurations in (PbTiO3)n/(SrTiO3)n superlattices
Cheng Dai, Zijian Hong, Sujit Das, Yun-Long Tang, Lane W. Martin, Ramamoorthy Ramesh, Long-Qing Chen
Applied Physics Letters 123, 052903 (2023)
DOI: https://doi.org/10.1063/5.0160901
63. The emergence of three-dimensional chiral domain walls in polar vortices
Sandhya Susarla1, Shanglin Hsu, Fernando Gómez-Ortiz4, Pablo García-Fernández, Benjamin H. Savitzky, Sujit Das, Piush Behera, Javier Junquera, Peter Ercius, Ramamoorthy Ramesh, Colin Ophus
Nature Communications 14, 4465 (2023)
DOI: https://doi.org/10.1038/s41467-023-40009-2
62. Pure Chiral Polar Vortex Phase in PbTiO3/SrTiO3 Superlattices with Tunable Circular Dichroism
Sujit Das,* Margaret R. McCarter, Fernando G.mez-Ortiz, Yun-Long Tang, Zijian Hong, Anirban Ghosh, Padraic Shafer, Pablo Garc.a-Fern.ndez, Javier Junquera, Lane W. Martin, and Ramamoorthy Ramesh
Nano Letters 23, 6602-6609 (2023)
DOI: https://doi.org/10.1021/acs.nanolett.3c01744
61. Hexagonal close-packed polar-skyrmion lattice in ultrathin ferroelectric PbTiO3 films
Shuai Yuan, Zuhuang Chen, Sergei Prokhorenko, Yousra Nahas, Laurent Bellaiche, Chenhan Liu, Bin Xu, Lang Chen, Sujit Das, and Lane W. Martin
Physical Review Letters 130, 226801 (2023)
DOI: 10.1103/PhysRevLett.130.226801
60. Multiscale electric-field imaging of polarization vortex structures in PbTiO3/SrTiO3 superlattices
Christopher Addiego, Jacob A. Zorn, Wenpei Gao, Sujit Das, Jiaqi Guo, Chengqing Qu, Liming Zhao, Lane W. Martin, Ramamoorthy Ramesh, Long-Qing Chen, Xiaoqing Pan
APL Materials 11, 051106 (2023)
DOI:https://doi.org/10.1063/5.0146713
59. Impact of uniaxial strain on terahertz modulation characteristics in flexible epitaxial VO2 film across the phase transition
Xue Chang, Jiang Li, Jian Mu, Chun-Hao Ma, Wanxia Huang, Hong-Fu Zhu, Qiao Liu, Liang-Hui Du, Sen-Cheng Zhong, Zhao-Hui Zhai, Sujit Das, Yen-Lin Huang, Gang-Bei Zhu, Li-Guo Zhu, and Qiwu Shi
Optics Express 31, 13243-13254 (2023)
DOI: https://doi.org/10.1364/OE.488947
58. Emergent Ferroelectric Switching Behavior from Polar Vortex Lattice
Piush Behera, Eric Parsonnet, Fernando Gómez-Ortiz, Vishantak Srikrishna, Peter Meisenheimer, Sandhya Susarla, Pravin Kavle, Lucas Caretta, Yongjun Wu, Zishen Tian, Abel Fernandez, Lane W. Martin, Sujit Das, Javier Junquera, Zijian Hong*, Ramamoorthy Ramesh*
Advanced Materials 2208367 (2023)
DOI: https://doi.org/10.1002/adma.202208367
57. Emergent Chirality in a Polar Meron to Skyrmion Phase Transition
Yu-Tsun Shao, Sujit Das, Zijian Hong, Ruijuan Xu, Swathi Chandrika, Fernando Gómez- Ortiz, Pablo García-Fernández, Long-Qing Chen, Harold Y. Hwang, Javier Junquera, Lane W. Martin, Ramamoorthy Ramesh & David A. Muller
Nature Communications 14, 1355 (2023)
DOI: https://doi.org/10.1038/s41467-023-36950-x
56. Topological phenomena at the oxide interfaces
Kavya Ravindran, Jayjit Kumar Dey, Aryan Keshri, Basanta Roul, Saluru Baba Krupanidhi, Sujit Das$
Materials for Quantum Technology 3, 012002(2023)
DOI: https://doi.org/10.1088/2633-4356/acbcba
55. Highly flexible Ti3C2Tx MXene/ waterborne polyurethane membrane for high-efficiency terahertz modulation with low insertion loss
Tangdong Feng, Wanxia Huang, Yiwen Hu, Hongfu Zhu, Xue Chang, Tianyu An, Xueguang Lu, Daoyuan Wang, Basanta Roul, Sujit Das, Hua Deng, K. I. Zaytsev, Li-Guo Zhu, and Qiwu Shi
ACS Applied Materials & Interfaces (2023)
DOI: https://doi.org/10.1021/acsami.2c21031
54. Reduced-graphene oxide decorated c-In2Se3/Si heterostructure-based broadband photodetectors with enhanced figures-of-merit
Basanta Roul, Arun Malla Chowdhury, Malti Kumari, Kishan Lal Kumawat, Sujit Das, K. K. Nanda and S. B. Krupanidhi
Material Advances 4, 5960606 (2023)
DOI: 10.1039/d2ma00918h
2022
53. Structural Chirality of Polar Skyrmions Probed by Resonant Elastic X-ray Scattering
Margaret R. McCarter,∗ Kook Tae Kim, ∗ Vladimir A. Stoica, Sujit Das, Christoph Klewe, Elizabeth P. Donoway, David M. Burn, Padraic Shafer, Fanny Rodolakis, Mauro A. P. Gonalves, Fernando G ́omez-Ortiz, Jorge Iniguez, Pablo Garcia-Fernandez, Javier Junquera, Stephen W. Lovesey, Gerrit van der Laan, Se Young Park, John W. Freeland, Lane W. Martin, Dong Ryeol Lee,$ and Ramamoorthy Ramesh$
Physical Review Lett. 129, 247601 (2022)
DOI: https://doi.org/10.1103/PhysRevLett.129.247601
Cover article: https://journals.aps.org/prl/covers/129/24
52. Optimization of PbTiO3 single crystals with flux and laser floating zone method
Lucas A. Pressley, Mekhola Sinha, Hector K. Vivanco, Juan Chamorro, Sujit Das, Ramamoorthy Ramesh, Tyrel M. McQueen
Crystal Growth & Design 22, 5629-5638 (2022)
DOI: https://doi.org/10.1021/acs.cgd.2c00716
51. Theoretical understanding of polar topological phase transitions in functional oxide heterostructures: A review
Xiangwei Guo, Linming Zhou, Basanta Roul, Yongjun Wu, $ Yuhui Huang, $ Sujit Das,$ and Zijian Hong$
Small Methods 6, 2200486 (2022)
DOI: https://doi.org/10.1002/smtd.202200486
50. Erbium-Implanted Materials for Quantum Communication Applications
Paul Stevenson, Christopher M Phenicie, Isaiah Gray, Sebastian P Horvath, Sacha Welinski, Austin M Ferrenti, Alban Ferrier, Philippe Goldner, Sujit Das, Ramamoorthy Ramesh, Robert J Cava, Nathalie P de Leon, and Jeff D Thompson
Physical Rev. B 105, 224116 (2022)
DOI: https://doi.org/10.1103/PhysRevB.105.224106
49. Inherent spin–polarization coupling in a magnetoelectric vortex
Sujit Das,*$ Valentyn Laguta,* Katherine Inzani,* Weichuan Huang, Junjie Liu, Ruchira Chatterjee, Margaret R. McCarter, Sandhya Susarla, Arzhang Ardavan, Javier Junquera, Sinéad M. Griffin, and Ramamoorthy Ramesh
Nano Letters 10, 3976-3982 (2022)
DOI: 10.1021/acs.nanolett.2c00496
48. Chiral structures of electric polarization vectors quantified by X-ray resonant scattering
Kook Tae Kim,* Margaret R. McCarter,* Vladimir A. Stoica, Sujit Das, Christoph Klewe, Elizabeth P. Donoway, David M. Burn, Padraic Shafer, Fanny Rodolakis, Mauro A. P. Gonçalves, Fernando Gómez-Ortiz, Jorge Íñiguez, Pablo García-Fernández, Javier Junquera, Stephen W. Lovesey, Gerrit van der Laan, Se Young Park, John W. Freeland,3, § Ramamoorthy Ramesh, Dong Ryeol Lee
Nature Communications 13, 1769 (2022)
DOI: https://doi.org/10.1038/s41467-022-29359-5
47. VO2-metallic Hybrid Metasurfaces for Agile Terahertz Wave Modulation by Phase Transition
Hongfu Zhu, Jiang Li, Lianghui Du, Lijun Shan, Peng Li, Xueguang Lu, Tangdong Feng, Sujit Das, Wanxia Huang, Qiwu Shi, Liguo Zhu
APL Materials 10, 031112 (2022)
DOI: https://doi.org/10.1063/5.0081244
46. Local Manipulation of Polar Skyrmions and Topological Phase Transitions
Linming Zhou, Yongjun Wu, Sujit Das, Yunlong Tang, Cheng Li, Yuhui Huang, He Tian, Long-Qing Chen, Ramamoorthy Ramesh, Zijian Hong
Matter 5, 1031-1041 (2022)
DOI: https://doi.org/10.1016/j.matt.2022.01.010
45. The role of lattice dynamics in ferroelectric switching
Qiwu Shi, Eric Parsonnet, Xiaoxing Chen, Ren-Ci Peng, Abel Fernandez, Natalya Fedorova, Alexander Qualls, Xiaoxi Huang, Xue Chang, Hongrui Zhang, David Pesquera, Sujit Das, Dmitri Nikonov, Ian Young, Long-Qing Chen, Lane Martin, Yen-Lin Huang, Jorge Íñiguez, Ramamoorthy Ramesh
Nature Communications 13, 1110 (2022)
DOI: https://doi.org/10.1038/s41467-022-28622-z
44. Order-disorder transitions in a polar vortex lattice
Linming Zhou, Cheng Dai, Peter Meisenheimer, Sujit Das, Yongjun Wu, Yuhui Huang, Javier Junquera, Long-Qing Chen, Ramamoorthy Ramesh, Zijian Hong
Advanced Functional Materials 32, 2111392 (2022)
DOI: https://doi.org/10.1002/adfm.202111392
43. Electric field control of Chirality
Piush Behera, Molly A. May, Fernando Gómez-Ortiz, Sandhya Susarla, Sujit Das, Christopher T. Nelson, Lucas Caretta, Shang-Lin Hsu, Margaret R. McCarter, Benjamin H. Savitzky, Edward S. Barnard, Archana Raja, Zijian Hong, Pablo García-Fernandez, Stephen W. Lovesey, Gerrit van der Laan, Colin Ophus, Lane W. Martin, Javier Junquera, Markus B. Raschke, Ramamoorthy Ramesh
Sci. Adv. 8, eabj8030 (2022)
DOI: 10.1126/sciadv.abj8030
42. Tunable switching behaviors and topological phase transitions of a polar vortex supercrystal
Cheng Dai, Vladimir Alexandru Stoica, Sujit Das, Zijian Hong, Lane W. Martin, Ramamoorthy Ramesh, John.W. Freeland, Haidan Wen, Venkatraman Gopalan, Long-Qing Chen
Advanced Materials 34, 2106401 (2022)
DOI: https://doi.org/10.1002/adma.202106401
41. Room-temperature ferromagnetism at an oxide/nitride interface
Qiao Jin, Zhiwen Wang, Qinghua Zhang, Yonghong Yu, Shan Lin, Shengru Chen, Mingqun Qi, He Bai, Amanda Huon, Qian Li, Le Wang, Xinmao Yin, Chi Sin Tang, Andrew T. S. Wee, Fanqi Meng, Jiali Zhao, Jia-Ou Wang, Haizhong Guo, Chen Ge, Can Wang, Wensheng Yan, Tao Zhu, Lin Gu, Scott A. Chambers, Sujit Das, Timothy Charlton, Michael R. Fitzsimmons, Gang-Qin Liu, Shanmin Wang, Kui-juan Jin, Hongxin Yang, and Er-Jia Guo
Physical Review Lett. 128, 017202 (2022)
DOI: https://doi.org/10.1103/PhysRevLett.128.017202
40. Enhanced Piezoelectricity and Excellent Thermal Stability in Sm3+ Doped BiFeO3- PbTiO3 Ceramics
Xinyu He, Tao Wang, Xudong Li, Sujit Das, Xingjun Liu, Zuhuang Chen
ACS Applied Electronic Materials (2022)
DOI: https://doi.org/10.1021/acsaelm.1c01166
2021
39. Local negative permittivity and topological phase-transition in polar skyrmions
S. Das*$, Z. Hong*, V.A. Stoica*, M. A. P. Gonçalves*, Y.T. Shao, E. Parsonnet, E. J. Marksz, S. Saremi, M. R. McCarter, A. Reynoso, C. J Long, A. M. Hagerstrom, D. Meyers, V. Ravi, B. Prasad, H. Zhou, Z. Zhang, H. Wen, F. Gómez-Ortiz, P. García-Fernández, J. Bokor, J. Íñiguez, J.W. Freeland, N. D. Orloff, J. Junquera, L.Q. Chen, S. Salahuddin, D. A. Muller, L.W. Martin, R. Ramesh$
Nature Materials 20, 194-201 (2021)
DOI: https://doi.org/10.1038/s41563-020-00818-y
38. Subterahertz collective dynamics of polar vortices
Qian Li*, Vladimir Stoica*, Marek Pasciak, Yi Zhu, Yakun Yuan, Tiannan Yang, Margaret R. McCarter, Sujit Das, Ajay K. Yadav, Suji Park, Cheng Dai, Hyeon Jun Lee, Youngjun Ahn, Samuel D. Marks, Takahiro Sato, Matthias C. Hoffmann, Matthieu Chollet, Michael E. Kozina, Silke Nelson, Diling Zhu, Donald A. Walko, Aaron M. Lindenberg, Paul G. Evans, Long-Qing Chen, R. Ramesh, Lane W. Martin, Venkatraman Gopalan, John W. Freeland, Jirka Hlinka, Haidan Wen
Nature 592, 376-380 (2021)
DOI: https://doi.org/10.1038/s41586-021-03342-4
Cover article
37. Atomic scale crystal field mapping of the polar vortices in oxide superlattices
Sandhya Susarla, Colin Ophus, Pablo Garcia Fernandez, Sujit Das, Peter Ercius, Lane W. Martin, Ramamoorthy Ramesh and Javier Junquera.
Nature Communications 12, 6273 (2021)
DOI: https://doi.org/10.1038/s41467-021-26476-5
36. Electric field manipulation of spins in doped PbTiO3
Junjie Liu, Valentin V. Laguta, Katherine Inzani, Weichuan Huang, Sujit Das, Ruchira Chatterjee, Evan Sheridan, Sinéad M. Griffin, Arzhang Ardavan, and Ramamoorthy Ramesh
Science Advances 7, eabf8103 (2021)
DOI: 10.1126/sciadv.abf8103
35. Vortex Domain Walls in Ferroelectrics
Z. Hong*, S. Das*, C. T. Nelson*, A. Yadav, Y. Wu, J. Junquera, L.-Q. Chen, L. W. Martin, R. Ramesh
Nano Letters 21, 3533-3539 (2021)
DOI: https://doi.org/10.1021/acs.nanolett.1c00404
34. Correlating surface crystal orientation and gas kinetics in perovskite-oxide electrodes
Ran Gao*, Abel Fernandez*, Tanmoy Chakraborty, Aileen Luo, David Pesquera, Sujit Das, Gabriel Velarde, Vincent Thoréton, John Kilner, Tatsumi Ishihara, Slavomír Nemšák, Ethan Crumlin, Elif Ertekin, Lane W. Martin
Advanced Materials 33, 2100977 (2021)
DOI: https://doi.org/10.1002/adma.202100977
33. Strain-induced orbital contributions to oxygen electrocatalysis in transition metal perovskites
Abel Fernandez, Lucas Caretta, Sujit Das, Christoph Klewe, Djamila Lou, Ran Gao, Aileen, Luo, Eric Parsonnet, Padraic Shafer, Lane W. Martin*
Advanced Energy Materials 2102175 (2021)
DOI: https://doi.org/10.1002/aenm.202102175
32. Study of disorder in pulsed laser deposited double perovskite oxides by first-principle structure prediction
Edoardo Fertitta, Sujit Das, Debalina Banerjee, Farbod Ebrahimi, Clément Barraud, Kai Du, He Tian, Chris J. Pickard, Cedric Weber, Ramamoorthy Ramesh, Peter Littlewood, and David Dubbink
npj computational materials 7, 1-8 (2021)
DOI: https://doi.org/10.1038/s41524-021-00561-1
31. Epitaxial ferroelectric with metallic pyrochlore oxide electrodes
Z. Zhang, S.-L. Hsu, V. Stoica, H. Paik, J. Wang, L. Xie, M. Kumari, S. Das, Z. Leng, E.Parsonnet, A. Qualls, M. McBriarty, R. Proksch, A. Gruverman, D. G. Schlom, L.Q. Chen, S. Salahuddin, L. W. Martin, R. Ramesh
Advanced Materials 33, 2006089 (2021)
DOI: https://doi.org/10.1002/adma.202006089
30. Optical-transparent self-assembled MXene film with high efficient terahertz reflection modulation
Tangdong Feng, Wanxia Huang, Hongfu Zhu, Xueguang Lu, Sujit Das, and Qiwu Shi
ACS applied and interfaces 13, 10574-10582 (2021)
DOI: https://doi.org/10.1021/acsami.0c20787
29. The role of epitaxial strain on the electronic and magnetic structure of La0.7Sr0.3MnO3/LaCoO3 bilayers
S. Das, S. Ghosh, R. G. Tanguturi, R. Medwal, S. Gupta, R. K. Dokala, R. Rawat, S. Das, and S. Thota
AIP Advances 11, 125115 (2021)
DOI: https://doi.org/10.1063/5.0071572
2020
28. A new era in ferroelectrics
S. Das$, Z. Hong, M. McCarter, P. Shafer, Yu-Tsun Shao, D. A. Muller, L. W. Martin, R. Ramesh$
APL Materials 8, 120902 (2020)
DOI: https://doi.org/10.1063/5.0034914
27. A Phase Transition Oxide/Graphene Interface for Incident-Angle-Agile, Ultrabroadband, and Deep THz Modulation
Hongfu Zhu, Jiang Li, Lianghui Du, Wanxia Huang, Jingbo Liu, Jinhao Zhou, Yuanfu Chen, Sujit Das, Qiwu Shi, Liguo Zhu, and Cangli Liu
Advanced Material Interfaces 2001297 (2020)
DOI: https://doi.org/10.1002/admi.202001297
26. Temperature-dependent growth of hexagonal and monoclinic gallium sulfide films by pulsed-laser deposition
Kazutaka Eriguchi, Carlos Biaou, Sujit Das, Kin Man Yu, Junqiao Wu, and Oscar D. Dubon
AIP Advances 10, 105215 (2020)
DOI: https://doi.org/10.1063/5.0021938
25. Ultralow voltage manipulation of ferromagnetism
Bhagwati Prasad, Yen-Lin Huang, Rajesh V. Chopdekar, Zuhuang Chen, James Steffes, Sujit Das, Qian Li, Mengmeng Yang, Chia-Ching Lin, Tanay Gosavi, D. Nikonov, Zi Qiang Qiu, Lane Martin, Bryan D. Huey, I. Young, Jorge Íñiguez, S. Manipatruni, and R Ramesh
Advanced Materials 32, 2001943 (2020)
DOI: https://doi.org/10.1002/adma.202001943
24. Elastic Strain control of Electronic Structure, and Magnetic Properties of [Pr1-xCaxMnO3/SrTiO3]15 Superlattices
Ravi Kiran Dokala, Shaona Das, Deep Chandra Joshi, Sayandeep Ghosh, Zhuo Yan, Yajun Qi, Sujit Das$ and Subhash Thota$
Journal of Applied Physics 127, 175303 (2020)
DOI: https://doi.org/10.1063/5.0002818
23. Thickness-dependent magnetization of Ru exchange spring at a La0.7Sr0.3MnO3-SrRuO3 interface
Martin Koch, Lukas Bergmann, Stefano Agrestini, Igor Maznichenko, Ingrid Mertig, Andreas Herklotz, Sujit Das, Diana A. Rata, and Kathrin Dörr
Phys. Status Solidi B 1900616 (2020)
DOI: https://doi.org/10.1002/pssb.201900616
22. Switching magnetic anisotropy of SrRuO3 by capping-layer-induced octahedral distortions
Shan Lin, Qinghua Zhang, Manuel A. Roldan, Sujit Das, Timothy Charlton, Michael R. Fitzsimmons, Qiao Jin, Sisi Li, Zhenping Wu, Shuang Chen, Haizhong Guo, Xin Tong, Chen Ge, Meng He, Can Wang, Lin Gu, Kui-juan Jin, Er-Jia Guo
Phys. Rev. Applied 13, 034033 (2020)
DOI: https://doi.org/10.1103/PhysRevApplied.13.034033
2019
21. Versatile and Highly Efficient Controls of Reversible Topotactic Metal-Insulator Transitions in Epitaxial Manganite Films through Proton Intercalation
Shanquan Chen, Haiping Zhou, Xing Ye, Zuhuang Chen, Jinzhao Zhao, Sujit Das, Christoph Klewe, Lei Zhang, Eduardo Lupi, Padraic Shafer, Elke Arenholz, Dun Jin, Haoliang Huang, Yalin Lu, Xiaowen Li, Meng Wu, Shanming Ke, Hu Xu, Xierong Zeng, Chuanwei Huang, Lane Martin, and Lang Chen
Advanced Functional Materials 29, 1907072 (2019)
DOI: https://doi.org/10.1002/adfm.201907072
20. Mechanical-Force Induced Non-Local, Collective Ferroelastic Switching in Ferroelectric Epitaxial Thin Films
Xiaoyan Lu, Zuhuang Chen, Ye Cao, Yunlong Tang, Ruijuan Xu, Sahar Saremi, Zhan Zhang, Yongqi Dong, Sujit Das, Hangbo Zhang, Limei Zheng, Weiming Lv, Jiangyu Li, Lang Chen, Hui Li, Wenwu Cao, and Lane W. Martin
Nature Communications 10, 3951 (2019)
DOI: https://doi.org/10.1038/s41467-019-11825-2
19. Observation of room temperature polar skyrmions
S. Das*$, Y. L. Tang*, Z. Hong*, M. A. P. Gonçalves*, M. R. McCarter, C. Klewe, K.X. Nyugen, F. Gómez-Ortiz, P. Shafer, E. Arenholz, V. A. Stoica, S.-L. Hsu, B. Wang, C. Ophus, J. F. Liu, C. T. Nelson, S. Saremi, B. Prasad, A. B. Mei, D. G. Schlom, J. Íñiguez, P. García-Fernández, D.A. Muller, L. Q. Chen, J. Junquera, L. W. Martin and R. Ramesh$
Nature 568, 368-372 (2019)
DOI: https://doi.org/10.1038/s41586-019-1092-8
18. Optical Creation of an Oxide Supercrystal with Three-Dimensional Nanoscale Periodicity
V.A. Stoica, N. Laanait, C. Dai, Z. Hong, Y. Yuan, Z. Zhang, S. Lei, M.R. McCarter, A. Yadav, A. R. Damodaran, S. Das, G.A. Stone, J. Karapetrova, D.A. Walko, X. Zhang, L. W. Martin, R. Ramesh, L.-Q. Chen, H. Wen, V. Gopalan, and J.W. Freeland
Nature Materials 18, 377-383 (2019)
DOI: https://doi.org/10.1038/s41563-019-0311-x
Cover article
17. Observation of Spatially Resolved Steady State Negative Capacitance
Ajay K. Yadav, Kayla X. Nguyen, Zijian Hong, Pablo García-Fernández, Pablo Aguado-Puente, Christopher T. Nelson, Sujit Das, Bhagwati Prasad, Daewoong Kwon, Suraj Cheema, Asif I. Khan, Jorge Íñiguez, Javier Junquera, Long-Qing Chen, David A. Muller, Ramamoorthy Ramesh, Sayeef Salahuddin
Nature 565, 468-471 (2019)
DOI: https://doi.org/10.1038/s41586-018-0855-y
16. Low-field switching of non-collinear spin textures at La0.7Sr0.3MnO3-SrRuO3 interfaces
S. Das$, A.D. Rata, I.V. Maznichenko, S. Agrestini, E. Pippel, K. Chen, E. Pellegrin, S. M. Valvidares, H. B. Vasili, J. Herrero-Martin, K. Nenkov, A. Herklotz, A. Ernst, I. Mertig, Z. Hu, and K. Dörr$
Phys. Rev. B 99, 024416 (2019)
DOI: https://doi.org/10.1103/PhysRevB.99.024416
15. Low-temperature Anomalous Spin Correlations and Kondo Effect in Ferromagnetic SrRuO3/LaNiO3/ La0.7Sr0.3MnO3 Trilayers
S. Ghosh, R. G. Tanguturi, D. C. Joshi, P. Pramanik, S. Singh, R. Rawat, R. J. Choudhury, P.K. Mishra$, S. Das$, S. Thota$
Phys. Rev. B 99, 115135 (2019)
DOI: https://doi.org/10.1103/PhysRevB.99.115135
14. Shear Strain-induced Anisotropic Domain Evolution in Mixed-Phase BiFeO3Epitaxial Films
Han Xu, Zuhuang Chen, Xiaoyi Zhang, Yongqi Dong, Bin Hong, Jiangtao Zhao, Lang Chen, Sujit Das, Chen Gao, Changgan Zeng, Haidan Wen and Zhenlin Luo
AIP Advances 9, 025114 (2019)
DOI: https://doi.org/10.1063/1.5080709
2018
13. Unexpected Termination Switching and Polarity Compensation in LaAlO3/SrTiO3 heterostructures
Guneeta Singh-Bhalla, Pim B. Rossen, Gunnar K. Pa ́lsson, Matthew Mecklenburg, Thomas Orvis, Sujit Das, Yun-Long Tang, Jaganatha S. Suresha, Di Yi, Abhigyan Dasgupta, David Doenning, Victor G. Ruiz, Ajay K. Yadav, Morgan Trassin, John T. Heron, Charles S. Fadley, Rossitza Pentcheva, Jayakanth Ravichandran, and Ramamoorthy Ramesh
Phys. Rev. Materials 2, 112001(R) (2018)
DOI: https://doi.org/10.1103/PhysRevMaterials.2.112001
12. Emergent topologies in oxide superlattices
S. Das, A. Ghosh, M. R. MacCarter, S. L. Hsu, Y.L. Tang, R. Ramesh, and L. W. Martin
APL Materials 6, 100901 (2018)
DOI: https://doi.org/10.1063/1.5046100
11. Structural and Magnetic Properties of La0.7Sr0.3MnO3/LaCoO3 Heterostructures
S. Thota, K. Roychowdhury, V. Thakre, S. C. Ganguly, Z.H. Chen$, E J. Guo$, and S. Das$
Appl. Phys. Lett. 113, 122405 (2018)
DOI: https://doi.org/10.1063/1.5045359
10. Complex Strain Evolution of Polar and Magnetic Order and Control of Spin Orientation in Multiferroic BiFeO3 Thin Films
Zuhuang Chen, Zhanghui Chen, Chang-Yang Kuo, Yunlong Tang, Liv R. Dedon, James D. Clarkson, Alan Farhan, Qian Li, Mengmeng Yang, Yen-Lin Huang, Sujit Das, Bhagwati Prasad, A. Tanaka, Elke Arenholz, Andreas Scholl, Ying-Hao Chu, Z. Q. Qiu, Zhiwei Hu, Liu-Hao Tjeng, Ramamoorthy Ramesh, Lin-Wang Wang, and Lane W. Martin
Nature Communications 9, 3764 (2018)
DOI: https://doi.org/10.1038/s41467-018-06190-5
9. Interfacial magnetism in La0.7Sr0.3MnO3/LaNiO3 ultrathin superlattices
Sujit Das$, Sayandeep Ghosh, Prativa Pramanik, Deep Chandra Joshi and Subhash Thota$
J. Phys. D 51, 325001 (2018)
DOI: https://doi.org/10.1088/1361-6463/aacfd4
2017
8. Finite-size Scaling, Exchange-Bias and Antiferromagnetic Coupling in SrRuO3/LaNiO3 / SrRuO3 Trilayers
S. Thota, S. Ghosh, S. Nayak, D. C. Joshi, P. Pramanik, K. Roychowdhury, and S. Das$
J. Appl. Phys. 122, 124304 (2017)
DOI: https://doi.org/10.1063/1.5004130
7. Carrier driven coupling in ferromagnetic oxide heterostructures
Ching-Hao Chang, Angus Huang, Sujit Das, Sanjeev Kumar, and R. Ganesh
Phys. Rev. B 96, 184408 (2017)
DOI: https://doi.org/10.1103/PhysRevB.96.184408
2015
6. Strain dependence of the antiferromagnetic interface coupling in La0.7Sr0.3MnO3/SrRuO3 superlattice
Sujit Das$, Andreas Herklotz, Eckhard Pippel, Er-Jia Guo, Diana Rata and Kathrin Dörr$
Phys. Rev. B 91, 134405 (2015)
DOI: https://doi.org/10.1103/PhysRevB.91.134405
5. Strain-induced improvement of retention loss in PbZr0.2Ti0.8O3 films
E. J. Guo, R. Roth, S. Das, A. Herklotz, and K. Dörr
Appl. Phys. Lett. 106, 072904 (2015)
DOI: https://doi.org/10.1063/1.4913421
2014
4. Static and reversible elastic strain effects on magnetic order of La0.7Ca0.3MnO3/SrTiO3 superlattices
Sujit Das*, Andreas Herklotz, Er Jia Guo, and Kathrin Dörr
Journal of Applied Physics 115, 143902 (2014)
DOI: https://doi.org/10.1063/1.4870953
3. Strain induced low mechanical switching force in ultrathin PbZr0.2Ti0.8O3 films
E. J. Guo, R. Roth, S. Das, and K. Dörr
Appl. Phys. Lett. 105, 012903 (2014)
DOI: https://doi.org/10.1063/1.4889892
2. Enhancement of switching speed of BiFeO3 capacitors by magnetic fields
E. J. Guo, S. Das, and A. Herklotz
APL Materials 2, 096107 (2014)
DOI: https://doi.org/10.1063/1.4894758
2013
1. Tuning the switching time of BiFeO3 capacitors by electrodes conductivity
E. J. Guo, A. Herklotz, R. Roth, M. Christl, S. Das, W. Widdra and K. Dörr
Appl. Phys. Lett. 103, 022905 (2013)
DOI: https://doi.org/10.1063/1.4813419
Published (Conference proceeding):
9. Probing Three-dimensional Chiral Domain Walls in Polar Vortices
Sandhya Susarla, Shanglin Hsu, Piush Behera, Benjamin Savitzky, Sujit Das, Peter Ercius, Colin Ophus, Ramamoorthy Ramesh
Microscopy and Microanalysis 28 (S1), 1770 (2022)
Doi:10.1017/S1431927622007000
8. Melting of Polar Vortex Arrays in an Oxide Superlattice Probed by In Situ STEM EELS
Noah Schnitzer, Berit H. Goodge, Benjamin Miller, Sujit Das, Yu-Tsun Shao, David Muller, Ramamoorthy Ramesh, Lena F. Kourkoutis
Microscopy and Microanalysis 28 (S1), 3358 (2022)
Doi:10.1017/S1431927622009059
7. Atomic Scale Crystal Field Mapping of Polar Vortices in Oxide Superlattices
Sandhya Susarla, Pablo García-Fernández, Colin Ophus, Sujit Das, Pablo Aguado-Puente, Margaret McCarter, Peter Ercius, Lane W. Martin, Ramamoorthy Ramesh and Javier Junquera
Microscopy and Microanalysis 28 (S1), 2590 (2022)
Doi:10.1017/S1431927622009850
6. Emergent chirality in a polar meron to skyrmion transition revealed by 4D-STEM
Yu-Tsun Shao, Sujit Das, Zijian Hong, Ruijuan Xu, Swathi Chandrika, Fernando Gómez-Ortiz, Pablo García-Fernández, Long-Qing Chen, Harold Hwang, Javier Junquera, Lane Martin, Ramamoorthy Ramesh, David Muller
Microscopy and Microanalysis 27 (S1), 348-350 (2021)
DOI: https://doi.org/10.1017/S1431927621001793
5. Probing the dynamics of ferroelectric topological oscillators with the electron beam
Yu-Tsun Shao, Yousra Nahas, Prokhorenko Sergei, Sujit Das, Ruijuan Xu, Swathi Chandrika, KP Harikrishnan, Harold Hwang, Ramamoorthy Ramesh, Laurent Bellaiche, David Muller
Microscopy and Microanalysis 27 (S1), 690-692 (2021)
DOI: https://doi.org/10.1017/S143192762100283X
4. Atomic Resolution Crystal Field Splitting Mapping in Polar Vortices Oxide Superlattices
Sandhya Susarla, Sujit Das, Weichuan Huang, Colin Ophus, Peter Ercius, Ramamoorthy Ramesh
Microscopy and Microanalysis 26 (S2), 3178-3180 (2020)
DOI: 10.1017/S1431927620024083
3. Mapping Topological Dipole Textures, Chirality, and the Potential Energy Landscape of Polar Skyrmions Using 4D-STEM
Yu-Tsun Shao, Sujit Das, Ruijuan Xu, Javier Junquera, Swathi Chandrika, Harold Y. Hwang, Ramamoorthy Ramesh and David Muller
Microscopy and Microanalysis 26 (S2), 968-970 (2020)
DOI: https://doi.org/10.1017/S1431927620016529
2. In-situ Electric Field Manipulation of Ferroelectric Vortices
Christopher T. Nelson, Zijian Hong, Cheng Zhang, Ajay K. Yadav, Sujit Das, Shang-Lin Hsu, Miaofang Chi, Philip D Rack, Long-Qing Chen, Lane W. Martin and Ramamoorthy Ramesh
Microscopy and Microanalysis 25 (S2), 1844-1845 (2019)
DOI: https://doi.org/10.1017/S1431927619009954
1. Preparation and Magnetic Studies on 10% Co- doped BiFeO3 Multiferroic Nanoparticles
Samar Layek, Sujit Das and H. C. Verma
AIP Conf. Proc. 1349, 351-352 (2011)
DOI: https://doi.org/10.1063/1.3605879
