Dresden 2017 – wissenschaftliches Programm
TT 46.3: Hauptvortrag
Mittwoch, 22. März 2017, 16:00–16:30, HSZ 03
Floquet Engineering and Control of Topology in Solid State Systems — •Takashi Oka1,2, Leda Bucciantini1,2, Sthitadhi Roy2, and Sota Kitamura3 — 1Max Planck institute for the Physics of Complex Systems, Dresden, Germany — 2Max Planck institute for Chemical Physics of Solids, Dresden, Germany — 3The university of Tokyo, Department of Tokyo, Tokyo, Japan
Periodically driven quantum system is attacting interest as a way to create new state of matter with exotic topological and dynamical properties.
1. Emergent Weyl points and Fermis arcs in a Floquet Weyl semimetal : We find that a series of infinite numbers of Weyl points emerges, moves and annihilates in a Floquet Weyl semimetal that can be realized by applying circularly polarized laser to a three dimensional Dirac mateiral.
2. Landau quantization in an oscillating magnetic field : We find that Landau quantization is not restricted to a static magnetic field but can be realized in oscillating fields and find a state that is analogous to the integer quantum Hall effect (QHE) when the ratio between the cyclotron frequency and the laser frequency is given by magic numbers.
 L. Bucciantini, S. Roy, S. Kitamura, and T. Oka, in prep.
 T. Oka, and L. Bucciantini, Phys. Rev. B 94, 155133 (2016)