Quantum transport in topological semimetals under magnetic fields

HZ Lu, SQ Shen - Frontiers of Physics, 2017 - Springer
Topological semimetals are three-dimensional topological states of matter, in which the
conduction and valence bands touch at a finite number of points, ie, the Weyl nodes …

Geometry, anomaly, topology, and transport in Weyl fermions

A Ahmad, G Varma, G Sharma - Journal of Physics: Condensed …, 2024 - iopscience.iop.org
Weyl fermions are one of the simplest objects that link ideas in geometry and topology to
high-energy physics and condensed matter physics. Although the existence of Weyl …

Linear magnetoconductivity in an intrinsic topological Weyl semimetal

SB Zhang, HZ Lu, SQ Shen - New Journal of Physics, 2016 - iopscience.iop.org
Searching for the signature of the violation of chiral charge conservation in solids has
inspired a growing passion for the magneto-transport in topological semimetals. One of the …

Topological Anderson insulator in electric circuits

ZQ Zhang, BL Wu, J Song, H Jiang - Physical Review B, 2019 - APS
In this paper, we investigate the realization of topological Anderson insulators in electric
circuits. A disordered Haldane model is constructed through electric circuit networks …

Weyl fermions with arbitrary monopoles in magnetic fields: Landau levels, longitudinal magnetotransport, and density-wave ordering

X Li, B Roy, S Das Sarma - Physical Review B, 2016 - APS
We theoretically address the effects of strong magnetic fields in three-dimensional Weyl
semimetals (WSMs) built out of Weyl nodes with a monopole charge n. For n= 1, 2, and 3 we …

Negative longitudinal magnetoconductance at weak fields in Weyl semimetals

A Knoll, C Timm, T Meng - Physical Review B, 2020 - APS
Weyl semimetals are topological materials that provide a condensed-matter realization of
the chiral anomaly. A positive longitudinal magnetoconductance quadratic in magnetic field …

Sign of longitudinal magnetoconductivity and the planar Hall effect in Weyl semimetals

G Sharma, S Nandy, S Tewari - Physical Review B, 2020 - APS
The manifestation of chiral anomaly in Weyl semimetals typically relies on the observation of
longitudinal magnetoconductance (LMC) along with the planar Hall effect, with a specific …

Disorder induced phase transition in magnetic higher-order topological insulator: A machine learning study

Z Su, Y Kang, B Zhang, Z Zhang, H Jiang - Chinese Physics B, 2019 - iopscience.iop.org
Previous studies presented the phase diagram induced by the disorder existing separately
either in the higher-order topological states or in the topological trivial states, respectively …

Magnetotransport in spin-orbit coupled noncentrosymmetric and Weyl metals

G Varma K, A Ahmad, S Tewari, G Sharma - Physical Review B, 2024 - APS
Recently, chiral anomaly (CA) has been proposed to occur in spin-orbit coupled
noncentrosymmetric metals (SOC-NCMs), motivating CA to be a Fermi surface property …

Quantum oscillations as a robust fingerprint of chiral anomaly in nonlinear response in Weyl semimetals

C Zeng, S Nandy, P Liu, S Tewari, Y Yao - Physical Review B, 2023 - APS
We investigate the nonlinear planar effects (NPEs) in Weyl semimetals (WSMs) starting from
the semiclassical regime to the ultraquantum limit within the framework of Boltzmann …