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We show that the semi-classical model of conduction breaks down if the mean free path of charge carriers is smaller than a typical extension of their wavefunction. This situation is realized for sufficiently slow charge carriers and leads…

Materials Science · Physics 2016-08-16 Guy Trambly De Laissardière , Jean-Pierre Julien , Didier Mayou

We show detailed derivation of the electric conductivity of quark matter at finite temperature and density under a magnetic field. We especially focus on the longitudinal electric conductivity along the magnetic direction and establish the…

High Energy Physics - Phenomenology · Physics 2020-06-24 Kenji Fukushima , Yoshimasa Hidaka

The normal-state transport properties of superconducting infinite-layer nickelates are investigated within an interacting three-orbital model. It includes effective Ni-$d_{z^2}$, Ni-$d_{x^2-y^2}$ bands as well as the self-doping band degree…

Superconductivity · Physics 2023-06-14 Steffen Bötzel , Ilya M. Eremin , Frank Lechermann

As exemplified by the growing interest in the quantum anomalous Hall effect, the research on topology as an organizing principle of quantum matter is greatly enriched from the interplay with magnetism. In this vein, we present a combined…

Strongly Correlated Electrons · Physics 2021-02-24 Y. Xu , L. Das , J. Z. Ma , C. J. Yi , S. M. Nie , Y. G. Shi , A. Tiwari , S. S. Tsirkin , T. Neupert , M. Medarde , M. Shi , J. Chang , T. Shang

The experimental observation of the long-sought quantum anomalous Hall effect was recently reported in magnetically doped topological insulator thin films [Chang et al., Science 340, 167 (2013)]. An intriguing observation is a rapid…

Mesoscale and Nanoscale Physics · Physics 2013-10-04 Hai-Zhou Lu , An Zhao , Shun-Qing Shen

Half-Heusler compounds from the $RE$PtBi family exemplify Weyl semimetals in which external magnetic field induce Weyl nodes. These materials exceptionally host topologically non-trivial states near the Fermi level and their manifestation…

We address the electron transport characteristics in bulk half-Heusler alloys with their compositions tuned to the borderline between topologically nontrivial semi-metallic and trivial semiconducting phases. The precise first-principles…

Materials Science · Physics 2016-05-03 J. Kiss , S. W. D'Souza , L. Wollmann , C. Felser , K. Chadova , D. Ködderitzsch , J. Minár , H. Ebert , S. Chadov

In this article, we consider a theoretical model for a type I Weyl semimetal, under the presence of a diluted uniform concentration of torsional dislocations. By a mathematical analysis for partial wave scattering (phase-shift) for the…

Mesoscale and Nanoscale Physics · Physics 2022-09-16 Daniel A. Bonilla , Enrique Muñoz

In this review, we survey the current progress in computing transport properties in semimetals which harbour non-Fermi liquid phases. We first discuss the widely-used Kubo formalism, which can be applied to the effective theory describing…

Strongly Correlated Electrons · Physics 2024-08-28 Ipsita Mandal , Hermann Freire

Using derivative expansion applied to the Wigner transform of the two - point Green function we analyse the anomalous quantum Hall effect (AQHE), and the chiral magnetic effect (CME). The corresponding currents are proportional to the…

Mesoscale and Nanoscale Physics · Physics 2021-04-23 M. A. Zubkov

It is at the heart of modern condensed matter physics to investigate the role of a topological structure in anomalous transport phenomena. In particular, chiral anomaly turns out to be the underlying mechanism for the negative longitudinal…

Disordered Systems and Neural Networks · Physics 2016-08-17 Kyoung-Min Kim , Dongwoo Shin , M. Sasaki , Heon-Jung Kim , Jeehoon Kim , Ki-Seok Kim

Properties of high-density strong-interaction matter of relevance for astrophysical scenarios that involve neutron stars are discussed. It is argued that theoretical and experimental insights from the small baryo-chemical potential…

High Energy Physics - Phenomenology · Physics 2023-05-01 Jochen Wambach

We compute the electric conductivity of quark matter at finite temperature $T$ and quark chemical potential $\mu$ under a magnetic field $B$ beyond the Lowest Landau level approximation. The electric conductivity transverse to $B$ is…

High Energy Physics - Phenomenology · Physics 2018-04-25 Kenji Fukushima , Yoshimasa Hidaka

Weyl quantization and related semiclassical techniques can be used to study conduction properties of crystalline solids subjected to slowly-varying, external electromagnetic fields. The case where the external magnetic field is constant, is…

Mathematical Physics · Physics 2015-08-18 Max Lein

Motivated by recent transport experiments, we theoretically study the quantum Hall effect in topological semimetal films. Owing to the confinement effect, the bulk subbands originating from the chiral Landau levels establish energy gaps…

Mesoscale and Nanoscale Physics · Physics 2021-07-13 D. -H. -Minh Nguyen , Koji Kobayashi , Jan-Erik R. Wichmann , Kentaro Nomura

The transport properties of massless fermions in $3+1$ spacetime dimension have been in the focus of recent theoretical and experimental research. New transport properties appear as consequences of chiral anomalies. The most prominent is…

Mesoscale and Nanoscale Physics · Physics 2018-05-09 Karl Landsteiner , Yan Liu

The nondissipative (Hall) viscosity is known to play an interesting role in two-dimensional (2D) topological states of matter, in the hydrodynamic regime of correlated materials, and in classical active fluids with broken time-reversal…

Mesoscale and Nanoscale Physics · Physics 2021-11-18 Iñigo Robredo , Pranav Rao , Fernando de Juan , Aitor Bergara , Juan L. Mañes , Alberto Cortijo , M. G. Vergniory , Barry Bradlyn

The Chalker-Coddington network model is often used to describe the transport properties of quantum Hall systems. By adding an extra channel to this model, we introduce an asymmetric model with profoundly different transport properties. We…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Kosuke Hirose , Tomi Ohtsuki , Keith Slevin

Exotic topological and transport properties of Weyl semimetals generated a lot of excitement in the condensed matter community. Here we show that Weyl semimetals in a strong magnetic field are highly unusual optical materials. The…

Mesoscale and Nanoscale Physics · Physics 2018-01-24 Zhongqu Long , Yongrui Wang , Maria Erukhimova , Mikhail Tokman , Alexey Belyanin

Unconventional surface states protected by non-trivial bulk orders are sources of various exotic quantum transport in topological materials. One prominent example is the unique magnetic orbit, so-called Weyl orbit, in topological semimetals…

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