115 citations · 414 across the 27 of their papers we have counts for
25 papers · 1 filter
Transport properties of a non-Hermitian Weyl semimetal
Soumi Dey, Ayan Banerjee, Debashree Chowdhury +1
In recent years, non-Hermitian (NH) topological semimetals have garnered significant attention due to their unconventional properties. In this work, we explore the transport proper…
Hexagonally warped exceptional physics in multi-Weyl semimetals
Debashree Chowdhury, Ayan Banerjee, Awadhesh Narayan
Hexagonal warping (HW) in three-dimensional topological insulators is, by now, well-known. We show that non-Hermitian (NH) loss/gain can generate an exceptional HW effect in double…
Light-driven Lifshitz transitions in non-Hermitian multi-Weyl semimetals
Debashree Chowdhury, Ayan Banerjee, Awadhesh Narayan
Non-Hermitian topological systems are the newest additions to the growing field of topological matter. In this work, we report of the light-driven exceptional physics in a multi-We…
Temporal evolution of fluxes in driven quantum dots
Debashree Chowdhury
Driven mesoscopic system is a topic of great recent interest. The temporal evolution of the fluxes(particle and energy) are studied in a system of a driven single level quantum dot…
Emergence of exceptional points and their spectroscopic signature in Dirac semimetal-dirty Superconductor heterojunction
Sayan Jana, Debashree Chowdhury, Arijit Saha
We theoretically investigate the emergence of non-hermitian physics at the heterojunction of a type-II Dirac semi-metal (DSM) and a dirty superconductor (DSC). The non-hermiticity…
Is telegraph noise a good model for the environment of mesoscopic systems?
A. Aharony, O. Entin-Wohlman, D. Chowdhury +1
Some papers represent the environment of a mesosopic system (e.g. a qubit in a quantum computer or a quantum junction) by a neighboring fluctuator, which generates a fluctuating el…
Photo-induced tunable Anomalous Hall and Nernst effects in tilted Weyl Semimetals using Floquet theory
Anirudha Menon, Debashree Chowdhury, Banasri Basu
In this paper, we discuss the effect of a periodically driving circularly polarized laser beam in the high frequency limit, on the band structure and thermal transport properties o…
Heat currents in electronic junctions driven by telegraph noise
O. Entin-Wohlman, D. Chowdhury, A. Aharony +1
The energy and charge fluxes carried by electrons in a two-terminal junction subjected to a random telegraph noise, produced by a single electronic defect, are analyzed. The telegr…
Anomalous thermoelectric properties of a Floquet topological insulator with spin momentum non-orthogonality
Madhumita Saha, Debashree Chowdhury
The spin momentum non-orthogonality in 3D topological insulators leads to modification of the spin texture and brings in an out-of-plane spin polarization component. Apart from spi…
Quantum Capacitance of a Topological Insulator-Ferromagnet Interface
Zhuo Bin Siu, Debashree Chowdhury, Mansoor B. A. Jalil +1
We study the quantum capacitance in a topological insulator thin film system magnetized in the in-plane direction in the presence of an out-of-plane magnetic field and hexagonal wa…
Consequences of the thermal dependence of spin orbit coupling in semiconductors
Debashree Chowdhury
The perturbation theory in semiconductor modifies some spin related parameters of the semi-conducting system. Furthermore, renormalization of the Kane model param…
Hybridization and Field Driven Phase Transitions in Hexagonally Warped Topological Insulators
Anirudha Menon, Debashree Chowdhury, Banasri Basu
In this paper we discuss the role of material parameters and external field effects on a thin film topological insulator(TI) in the context of quantum phase transition(QPT). First,…
Spin transport in tilted electron vortex beams
Banasri Basu, Debashree Chowdhury
In this paper we have enlightened the spin related issues of tilted Electron vortex beams. We have shown that in the skyrmionic model of electron we can have the spin Hall current…
Unified approach towards the dynamics of optical and electron vortex beams
Pratul Bandyopadhyay, Banasri Basu, Debashree Chowdhury
We have proposed a unified framework towards the dynamics of optical and electron vortex beams from the perspective of geometric phase and the associated Hall effects. The unificat…
Effect of Perturbative Hexagonal Warping on Quantum Capacitance in Ultra-Thin Topological Insulators
Anirudha Menon, Debashree Chowdhury, Banasri Basu
Ultra-thin 3D topological insulators provide a stage to study the surface physics of such materials by minimizing the bulk contribution. Further, the experimentally verified snowfl…
Kane model parameters and stochastic spin current
Debashree Chowdhury
The spin current and spin conductivity is computed through thermally driven stochastic process. By evaluating the Kramers equation and with the help of method we…
Electron vortex beams in a magnetic field and spin filter
Debashree Chowdhury, Banasri Basu, Pratul Bandyopadhyay
We investigate the propagation of electron vortex beams in a magnetic field. It is pointed out that when electron vortex beams carrying orbital angular momentum propagate in a magn…
Effect of non-uniform exchange field in ferromagnetic graphene
Debashree Chowdhury, B. Basu
We have presented here the consequences of the non-uniform exchange field on the spin transport issues in spin chiral configuration of ferromagnetic graphene. Taking resort to the…
Effect of cosmic string on spin dynamics
Debashree Chowdhury, B. Basu
In the present paper, we have investigated the role of cosmic string on spin current and Hall electric field. Due to the background cosmic string, the modified electric field of th…
Spin Transport in non-inertial frame
Debashree Chowdhury, B. Basu
The influence of acceleration and rotation on spintronic applications is theoretically investigated. In our formulation, considering a Dirac particle in a non-inertial frame, diffe…
The geometric phase and the geometrodynamics of relativistic electron vortex beams
Pratul Bandyopadhyay, Banasri Basu, Debashree Chowdhury
We have studied here the geometrodynamics of relativistic electron vortex beams from the perspective of the geometric phase associated with the scalar electron encircling the vorte…
Effect of spin rotation coupling on spin transport
Debashree Chowdhury, B. Basu
We have studied the spin rotation coupling(SRC) as an ingredient to explain different spin related issues. This special kind of coupling can play the role of a Dresselhaus like cou…
Inertial effect on spin orbit coupling and spin transport
B. Basu, Debashree Chowdhury
We theoretically study the renormalization of inertial effects on the spin dependent transport of conduction electrons in a semiconductor by taking into account the interband mixin…
The effect of inertia on the Dirac electron, the spin Hall current and the momentum space Berry curvature
Debashree Chowdhury, B. Basu
We have studied the spin dependent force and the associated momentum space Berry curvature in an accelerating system. The results are derived by taking into consideration the non r…