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We report on theoretical investigations of carrier scattering asymmetry at ferromagnet-semiconductor junctions. By an analytical $2\times 2$ spin model, we show that, when Dresselhaus interactions is included in the conduction band of III-V…

Materials Science · Physics 2018-05-23 T. Huong Dang , D. Quang To , E. Erina , T. L. Hoai Nguyen , V. Safarov , H. Jaffres , H. -J. Drouhin

We investigate a semimetal-superconductor phase transition of two-dimensional Dirac electrons at zero temperature by large-scale and essentially unbiased quantum Monte Carlo simulations for the half-filled attractive Hubbard model on the…

Strongly Correlated Electrons · Physics 2018-07-20 Yuichi Otsuka , Kazuhiro Seki , Sandro Sorella , Seiji Yunoki

Collective modes provide direct fingerprints of quantum matter. We predict a previously unidentified hybrid bulk electromagnetic mode in Weyl semimetals arising from the interplay between the chiral anomaly and the orientation of its…

Mesoscale and Nanoscale Physics · Physics 2026-05-27 Subrahmanyam D , Suhas Gangadharaiah , E. G. Mishchenko

We study the hydrodynamics of a gas of noninteracting Weyl fermions coupled to the electromagnetic field in $(2N + 1) + 1$ spacetime dimensions using the chiral kinetic theory, which encodes the gauge anomaly in the Chern character of the…

High Energy Physics - Theory · Physics 2017-04-05 Vatsal Dwivedi , Michael Stone

We use the AdS/CFT correspondence to compute the AC conductivities for a (2+1)-dimensional system of massless fundamental fermions coupled to (3+1)-dimensional Super Yang-Mills theory at strong coupling. We consider the system at finite…

High Energy Physics - Theory · Physics 2019-01-30 Gianluca Grignani , Andrea Marini , Lorenzo Papini , Adriano-Costantino Pigna

Based on an effective QCD Lagrangian we discuss the properties of charge density fluctuations in the vicinity of chiral phase transition. We explore thermodynamics in the presence of spinodal phase separation. We show that appearance of…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. Redlich , B. Friman , C. Sasaki

We present a first principles study of chiral plasma instabilities and axial charge transfer in non-Abelian plasmas with a strong gauge-matter coupling $g^2N_f=64$, by performing $3+1$ D real-time classical-statistical lattice simulation…

High Energy Physics - Phenomenology · Physics 2023-09-06 Sören Schlichting , Sayantan Sharma

We study the non-conservation of the chiral charge of Dirac fields between past and future null infinity due to the Adler-Bell-Jackiw chiral anomaly. In previous investigations \cite{dR21}, we found that this charge fails to be conserved if…

High Energy Physics - Theory · Physics 2023-11-20 Adrián del Río , Ivan Agullo

We propose an application of a parity-time symmetric non-Hermitian Su-Schrieffer-Heeger (SSH) model by embedded it in a two-dimensional square lattice tube. The coalescence state at the exceptional point of non-Hermitian SSH model is chiral…

Mesoscale and Nanoscale Physics · Physics 2019-10-04 K. L. Zhang , L. Jin , Z. Song

The effects of finite magnetization and electric polarization on dissipative and non-dissipative (anomalous) transport coefficients of a chiral fluid are studied. First, using the second law of thermodynamics as well as Onsager's time…

High Energy Physics - Theory · Physics 2017-04-28 N. Sadooghi , S. M. A. Tabatabaee

The magnetoelectric coupling of electrons in a three-dimensional solid can be effectively described by axion electrodynamics. Here we report the discovery of the fractional magnetoelectric effect in chiral anomalous semimetals of the…

Mesoscale and Nanoscale Physics · Physics 2022-07-15 Huan-Wen Wang , Bo Fu , Jin-Yu Zou , Zi-Ang Hu , Shun-Qing Shen

Massive Dirac fermions break the chiral symmetry explicitly and also make the Berry curvature of the band structure non-Abelian. By utilizing the Green's function technique, we develop a microscopic theory to establish a set of quantum…

Mesoscale and Nanoscale Physics · Physics 2020-03-25 Bo Fu , Huan-Wen Wang , Shun-Qing Shen

We elaborate the quasiclassical approach to obtain the modified chiral magnetic effect in the case when massless charged fermions interact with electromagnetic fields and the background matter by the electroweak forces. The derivation of…

High Energy Physics - Phenomenology · Physics 2018-03-16 Maxim Dvornikov , Victor B. Semikoz

We present results of a study of the Chiral Separation Effect (CSE) in quenched finite-density QCD. Using a recently developed numerical method we calculate the conserved axial current for exactly chiral overlap fermions at finite density…

High Energy Physics - Lattice · Physics 2018-04-18 M. Puhr , P. V. Buividovich

Emergent Lorentz symmetry and chiral anomaly are well known to play an essential role in anomalous transport phenomena of Weyl metals. In particular, the former causes a Berry-curvature induced orbital magnetic moment to modify the group…

Mesoscale and Nanoscale Physics · Physics 2022-02-23 Jinho Yang , Ki-seok Kim

Inspired by the Dirac model model of graphene, we consider a $(2+1)$-dimensional fermionic system in which fermions are described by four-component spinors. These fermions are proposed to interact with an electromagnetic field originating…

High Energy Physics - Theory · Physics 2025-04-04 Sergey N. Solodukhin

The axial anomaly in a quasi-one-dimensional (quasi-1D) chiral p-wave superfluid model, which has a epsilon_{x} p_{x}+i epsilon_{y} p_{y}-wave gap in 2D is studied. The anomaly causes an accumulation of the quasiparticle and a quantized…

Superconductivity · Physics 2007-05-23 J. Goryo

Kane fermions are characterized by a linear Dirac cone intersecting with a flat band, resembling a pseudo-spin-1 Dirac semimetal. Similar to relativistic Dirac fermions, Kane fermions satisfy a linear energy-momentum relation and can be…

Mesoscale and Nanoscale Physics · Physics 2024-02-16 Karun Gadge , Sumanta Tewari , Gargee Sharma

We study electronic and thermoelectric transport in a type I Weyl semimetal nanojunction, with a torsional dislocation defect, in the presence of an external magnetic field parallel to the dislocation axis. The defect is modeled in a…

Mesoscale and Nanoscale Physics · Physics 2021-11-08 Daniel Bonilla , Enrique Muñoz , Rodrigo Soto-Garrido

As first demonstrated by Tang and Cohen in chiral optics, the asymmetry in the rate of electromagnetic energy absorption between left and right enantiomers is determined by an optical chirality density [1]. Here, we demonstrate that this…

Mesoscale and Nanoscale Physics · Physics 2017-10-31 Igor Proskurin , Robert L. Stamps , Alexander S. Ovchinnikov , Jun-ichiro Kishine
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