Field controlled emerging physics in the layered quantum materials

Feb 15, 2024
10:00 AM - 11:00 AM
Dr. Haijing Zhang
MPI - CPfS, Dresden
Main Topic
Grit Rötzer
The multifunctional behaviors of quantum materials are driven by the intricate interplay between charge, orbital and spin degrees of freedom. Advances in modern field-effect devices allow for unprecedented control of these degrees of freedom, revealing a plethora of exotic physical phenomena such as superconductivity and long-range magnetic order. In this talk, I will provide an overview of our recent progress in controlling the emerging physical phenomena in layered quantum devices and how they offer new insights to the underlying physics. First, I will present recent results on the electric field control at the interfaces of ionic gated tellurium thin flake devices, demonstrating a fourfold increase in the Rashba spin-orbit coupling coefficient [1]. Next, I will discuss the observation of a spontaneous anomalous Hall effect, a trademark of time-reversal symmetry breaking, in a doped layered polar semiconductor. Notably, the magnitude of anomalous Hall conductivity can be enhanced by tuning the carrier density, which sheds new light on the interplay of magnetic and ferroelectric-like responses [2, 3]. If time permits, I will also discuss our ongoing efforts to investigate the pairing symmetry of the layered Kagome superconductors. [1] D. Fartab, J. Guimaraes, M. Schmidt, and H. Zhang*, Physical Review B, 108, 115305 (2023). [2] S. Kim, J. Zhu, M. M. Piva, M. Schmidt, D. Fartab, A. P. Mackenzie, M. Baenitz, M. Nicklas, H. Rosner, A. M. Cook, R. G. Hernández, L. Šmejkal and H. Zhang*, Advanced Science, 202307306 (2023). [3] J. Guimaraes, D. Fartab, M. Moravec, M. Schmidt, B. Schmidt and H. Zhang*, manuscript submitted. .

Last modified: Feb 15, 2024, 7:39:53 AM


Leibniz Institut für Festkörper- und Werkstoffforschung Dresden (D2E.27, IFW Dresden)Helmholtzstraße2001069Dresden


Leibniz Institut für Festkörper- und Werkstoffforschung DresdenHelmholtzstraße2001069Dresden
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