Concept
Landau quantization
Related publications (47)
Reentrant magic-angle phenomena in twisted bilayer graphene in integer magnetic fluxes
In this Letter we address the reentrance of magic-angle phenomena (band flatness and quantum-geometric transport) in twisted bilayer graphene (TBG) subjected to strong magnetic fluxes +/-(1)0, +/- 200, +/- 3(p0 ... ((D0 = h/e is the flux quantum per moire ...
AMER PHYSICAL SOC2022Landau levels of the Euler class topology
Two-dimensional systems with C2T (PT) symmetry exhibit the Euler class topology E is an element of Z in each two-band subspace realizing a fragile topology beyond the symmetry indicators. By systematically studying the energy levels of Euler insulating pha ...
AMER PHYSICAL SOC2022Anisotropic and nonlinear transport in microstructured 3D topological semimetals
Topological semimetals are frequently discussed as materials platforms for future electronics that exploit the remarkable properties of their quasiparticles. These ideas are mostly based on dispersion relations that mimic relativistic particles, such as We ...
EPFL2022Isolated ballistic non-abelian interface channel
The topological order of a quantum Hall state is mirrored by the gapless edge modes owing to bulk-edge correspondence. The state at the filling of ν = 5/2, predicted to host non-abelian anyons, supports a variety of edge modes (integer, fractional, neutral ...
2022Landau Levels as a Probe for Band Topology in Graphene Moire Superlattices
Oleg Yazyev, Quansheng Wu, Yifei Guan
We propose Landau levels as a probe for the topological character of electronic bands in two-dimensional moire superlattices. We consider two configurations of twisted double bilayer graphene (TDBG) that have very similar band structures, but show differen ...
AMER PHYSICAL SOC2021Non-linear Shubnikov-de Haas oscillations in the self-heating regime
Philip Johannes Walter Moll, Matthias Carsten Putzke, Chunyu Guo, Xiangwei Huang, Jonas De Jesus Diaz Gomez
We demonstrate a non-linear measurement scheme of the Shubnikov-de Haas effect based on Joule self-heating that builds on ideas of the 3 ?-method used in thin films. While the temperature dependence of the resistance, R(T), of clean metals at low temperatu ...
AIP Publishing2021Extremely large magnetoresistance in the "ordinary" metal ReO3
Oleg Yazyev, Quansheng Wu, Shengnan Zhang, Huancheng Chen
The extremely large magnetoresistance (XMR) observed in many topologically nontrivial and trivial semimetals has attracted much attention in relation to its underlying physical mechanism. In this paper, by combining the band structure and Fermi surface (FS ...
AMER PHYSICAL SOC2021Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction
Dirk Grundler, Ping Che, Andrea Mucchietto, Helmuth Berger, Jianing Li
The Dzyaloshinskii-Moriya interaction (DMI) has an impact on excited spin waves in the chiral magnet Cu2OSeO3 by means of introducing asymmetry in their dispersion relations. The confined eigenmodes of a chiral magnet are hence no longer the conventional s ...
2021Determination of the Fermi surface and field-induced quasiparticle tunneling around the Dirac nodal loop in ZrSiS
Unambiguous and complete determination of the Fermi surface is a primary step in understanding the electronic properties of topical metals and semimetals, but only in a relatively few cases has this goal been realized. In this work, we present a systematic ...
2020Interacting Dirac materials
We investigate the extent to which the class of Dirac materials in two-dimensions provides general statements about the behavior of both fermionic and bosonic Dirac quasiparticles in the interacting regime. For both quasiparticle types, we find common feat ...
IOP PUBLISHING LTD2020