29 papers
Conductivity of the Landau levels of two-dimensional Dirac cones and gapped nodal-rings in the quantum limit under impurity-potentials
Ipsita Mandal, Sanskar Sharma
We investigate the dc magnetoconductivity of two-dimensional Dirac cones and gapped nodal rings (GNRs) subjected to a perpendicular magnetic field, which quantises the electronic s…
Linear response from tilted Dirac cones under strain-induced pseudomagnetic fields
Sanskar Sharma, Ipsita Mandal
We investigate the transport signatures of pseudo-Landau levels (PLLs) in two-dimensional anisotropic Dirac systems with tilted cones, whose effective bandstructure results from st…
Interplay of strain-induced axial gauge fields and intrinsic band-topology in the magnetoelectric conductivity of gapped nodal rings
Firdous Haidar, Muhammed Jaffar A., Ipsita Mandal
We compute the magnetoelectric conductivity of a semimetal hosting an ideal gapped nodal ring (GNR) in three distinct planar-Hall configurations, in the simultaneous presence of an…
Puiseux series about exceptional singularities dictated by symmetry-allowed Hessenberg forms of perturbation matrices
Ipsita Mandal
We develop a systematic framework for determining the nature of exceptional points of order (EPs) in non-Hermitian (NH) systems, represented by complex square matr…
Direction-dependent linear response for gapped nodal-line semimetals in planar-Hall configurations
Fasil Hussain Rather, Firdous Haidar, Muhammed Jaffar A. +1
We compute the magnetoelectric conductivity for ideal nodal-line semimetals (NLSMs), with a finite but tiny mass-gap, in distinct planar-Hall set-ups. Each differing configuration…
Generic deformation channels for critical Fermi surfaces including the impact of collisions
Kazi Ranjibul Islam, Aditya Savanur, Ipsita Mandal
This paper constitutes a sequel to our theoretical efforts to determine the nature of generic low-energy deformations of the Fermi surface of a quantum-critical metal, which arises…