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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology

Thursday, 28 February 2019
(at 13:00 in room 115, Hallwachsstr. 3)
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Floquet engineering of quantum materials and ultrafast electronics

Dr. Takashi Oka

Max Planck Institute Physics of Complex Systems and Chemical Physics of Solids, Dresden

Realizing new quantum states in solid state materials is of fundamental interest. Thanks to recent developments in experimental techniques, Floquet engineering [1], i.e. control of quantum states by time periodical external fields, is becoming a practical way to search new exotic nonequilibrium quantum states. For example, using circularly polarized laser (CPL), it is possible to control the time-reversal symmetry of the materials. By applying CPL to materials such as 2D, 3D Dirac semimetals and Mott insulators, one can transform them into Floquet Chern insulator, Floquet Weyl semimetal [2], and even induce scalar chirality [3]. I will explain the basic theory of Floquet engineering and discuss their possible applications in ultrafast electronics.

Announcement (pdf)

Invited by G. Cuniberti

Within the nanoSeminar

last modified: 2021.05.05 Wed
author: webadmin