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 …

Electric and thermoelectric response for Weyl and multi-Weyl semimetals in planar Hall configurations including the effects of strain

R Ghosh, I Mandal - Physica E: Low-dimensional Systems and …, 2024 - Elsevier
We investigate the response tensors in planar Hall (thermal Hall) configurations such that a
three-dimensional Weyl or multi-Weyl semimetal is subjected to the influence of an electric …

Linear response in planar Hall and thermal Hall setups for Rarita-Schwinger-Weyl semimetals

R Ghosh, F Haidar, I Mandal - Physical Review B, 2024 - APS
We investigate the nature of the linear-response tensors in planar Hall and planar thermal
Hall setups, where we subject a Rarita-Schwinger-Weyl (RSW) semimetal to the combined …

Signatures of topology in generic transport measurements for Rarita–Schwinger–Weyl semimetals

I Mandal, S Saha, R Ghosh - Solid State Communications, 2025 - Elsevier
We investigate how the signatures of the topological properties of the bandstructures for
nodal-point semimetals are embedded in the response coefficients, arising in two distinct …

Direction-dependent conductivity in planar Hall set-ups with tilted Weyl/multi-Weyl semimetals

R Ghosh, I Mandal - Journal of Physics: Condensed Matter, 2024 - iopscience.iop.org
Direction-dependent conductivity in planar Hall set-ups with tilted Weyl/multi-Weyl semimetals -
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Electric, thermal, and thermoelectric magnetoconductivity for Weyl/multi-Weyl semimetals in planar Hall set-ups induced by the combined effects of topology and strain

L Medel, R Ghosh, A Martín-Ruiz, I Mandal - arxiv preprint arxiv …, 2024 - arxiv.org
We continue our investigation of the response tensors in planar Hall (or planar thermal Hall)
configurations where a three-dimensional Weyl/multi-Weyl semimetal is subjected to the …

Andreev bound states in Josephson junctions of semi-Dirac semimetals

I Mandal - Physica B: Condensed Matter, 2024 - Elsevier
We consider a Josephson junction built with the two-dimensional semi-Dirac semimetal,
which features a hybrid of linear and quadratic dispersion around a nodal point. We model …

Chiral anomaly and internode scatterings in multifold semimetals

I Mandal - arxiv preprint arxiv:2411.18434, 2024 - arxiv.org
In our quest to unravel the topological properties of nodal points in three-dimensional
semimetals, one hallmark property which warrants our attention is the chiral anomaly. In the …

Anisotropic conductivity for the type-I and type-II phases of Weyl/multi-Weyl semimetals in planar Hall set-ups

I Mandal - arxiv preprint arxiv:2410.05028, 2024 - arxiv.org
We compute the non-Drude part of the conductivity tensor in planar Hall set-ups, for tilted
Weyl and multi-Weyl semimetals, considering both the type-I and type-II phases. We do so in …

Collapse of Landau levels in semi-Dirac materials

D Asafov, I Pavlov - Physical Review B, 2024 - APS
Two-dimensional semi-Dirac models describe a family of novel materials that have
anisotropic dispersion with a relativistic-type spectrum along one of the spatial directions …