Assistant Professor
Off:
E-mail: sujitdas@iisc.ac.in
Website: https://sujitdas8.wixsite.com/das-group
EDUCATION:
| March 2012 – December 2016 | Ph.D., Martin Luther University (MLU) Halle- Wittenberg, IFW Dresden, Germany |
| May 2009 – May 2011 | M.Sc., Indian Institute of Technology, Kanpur, India |
| May 2006 – May 2009 | B.Sc., Narasinha Dutt College (Calcutta University), Howrah, India |
ACADEMIC APPOINTMENTS:
| February 2022 – present |
Assistant Professor, Indian Institute of Science, India |
| March 2021 – January 2022 | Postdoctoral Researcher, Unité Mixte de Physique CNRS Thales, France |
| February 2020 – Febraury 2021 | Research Assistant Professor, University of California, Berkeley, California, USA |
| January 2017 – January 2020 | Postdoctoral Researcher, University of California, Berkeley, California, USA |
AWARDS:
| 2021 | Australian Research Council DECRA (ARC-DECRA)-2022 Class |
| 2019 | Happy Electron Lab Funding |
| 2017 | Gorton-Betty Moore fellowship for Post-doctoral research at UCB |
| 2012 | German government fellowships TVL 75% for PhD |
Complex Oxides, Oxynitrides, Novel electronic and Quantum materials, Thin films, Material processing, Materials characterization, Spin manipulation, Magnetics, Ferroelectrics, Dielectrics, Pyroelectrics, Piezoelectrics, Energy conversion, Device
Selected Publications:
1. 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)
($ corresponding author; * equally contributed author)
2. 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).
3. 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)
4. 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)
5. 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)
6. 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)
7. 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)
8. 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)
9. 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)
10. 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)
11. 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)
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)
13. 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)
14. 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)
15. 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)
16. 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)
17. 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)
18. 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)
19. 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)
20. 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)
To be updated soon.