362 citations · 999 across the 28 of their papers we have counts for
28 papers
Anomalous transport in pseudospin-1 fermions
Adesh Singh, G. Sharma
Electronic transport in the model of pseudospin-1 fermions with a finite gap is studied within the semiclassical Boltzmann approximation. We show that coupling of…
Longitudinal magnetoconductance and the planar Hall conductance in inhomogeneous Weyl semimetals
Azaz Ahmad, Karthik V. Raman, Sumanta Tewari +1
Elastic deformations (strain) couple to the electronic degrees of freedom in Weyl semimetals as an axial magnetic field (chiral gauge field), which in turn affects their impurity d…
Melting of spin ice state and development of fifth order susceptibility with magnetic field in pyrochlore Tb2Sn2O7
Karan Singh, Dheeraj Ranaut, G. Sharma +1
Pyrochlores offer an ideal playground to investigate the magnetic ground state of frustrated magnetic systems. In this class of materials, competition between various magnetic inte…
Revisiting magnetotransport in Weyl semimetals
G. Sharma, Snehashish Nandy, Karthik V. Raman +1
A series of recent papers have claimed that intranode scattering, alone, can contribute to positive longitudinal magnetoconductance (LMC) due to chiral anomaly (CA) in Weyl semimet…
Magneto-Transport and High-Resolution Angle-Resolved Photoelectron Spectroscopy Studies of Palladium Doped BiTe
Shailja Sharma, Shiv Kumar, Girish C. Tewari +5
We have performed magneto-transport and high-resolution angle-resolved photoelectron spectroscopy (ARPES) measurements on palladium (Pd) doped topological insulator PdBi$_{2}…
Partially-separated Majorana modes in a disordered medium
Chuanchang Zeng, Gargee Sharma, Sumanta Tewari +1
Focusing on the implications of recent experiments on Majorana zero modes in semiconductor-superconductor (SM-SC) heterostructures, we critically examine the quantization of the ze…
Driven dynamics of a quantum dot electron spin coupled to bath of higher-spin nuclei
Arian Vezvaee, Gargee Sharma, Sophia E. Economou +1
The interplay of optical driving and hyperfine interaction between an electron confined in a quantum dot and its surrounding nuclear spin environment produces a range of interestin…
Longitudinal magnetoconductance and the planar Hall effect in a lattice model of tilted Weyl fermions
Azaz Ahmad, Gargee Sharma
The experimental verification of chiral anomaly in Weyl semimetals is an active area of investigation in modern condensed matter physics, which typically relies on the combined sig…
The sign of longitudinal magnetoconductivity and the planar Hall effect in Weyl semimetals
Gargee Sharma, S. Nandy, Sumanta Tewari
The manifestation of chiral anomaly in Weyl semimetals typically relies on the observation of longitudinal magnetoconductance (LMC) along with the planar Hall effect, with a specif…
Feasibility of measurement-based braiding in the quasi-Majorana regime of semiconductor-superconductor heterostructures
Chuanchang Zeng, Gargee Sharma, Tudor D. Stanescu +1
We discuss the feasibility of measurement-based braiding in semiconductor-superconductor (SM-SC) heterostructures in the so-called quasi-Majorana regime the topologically-trivi…
Majorana versus Andreev bound state energy oscillations in a 1D semiconductor-superconductor heterostructure
Gargee Sharma, Chuanchang Zeng, Tudor D. Stanescu +1
The recent experimental observations of decaying energy oscillations in semiconductor-superconductor Majorana nanowires is in contrast with the typical expectations based on the pr…
Superconductivity from collective excitations in magic angle twisted bilayer graphene
Gargee Sharma, Maxim Trushin, Oleg P. Sushkov +2
A purely electronic mechanism is proposed for the unconventional superconductivity recently observed in twisted bilayer graphene (tBG) close to the magic angle. Using the Migdal-El…
Absence of strong localization at low conductivity in the topological surface state of low disorder Sb2Te3
Ilan T. Rosen, Indra Yudhistira, Gargee Sharma +5
We present low-temperature transport measurements of a gate-tunable thin film topological insulator system that features high mobility and low carrier density. Upon gate tuning to…
Gauge phonon dominated resistivity in twisted bilayer graphene near magic angle
I. Yudhistira, N. Chakraborty, G. Sharma +5
Recent experiments on twisted bilayer graphene (tBG) close to magic angle show that a small relative rotation in a van der Waals heterostructure greatly alters its electronic prope…
Transverse thermopower in Dirac and Weyl semimetals
Gargee Sharma, Sumanta Tewari
Dirac semimetals (DSM) and Weyl semimetal (WSM) fall under the generic class of three-dimensional solids, which follow relativistic energy-momentum relation $ε_\mathbf{k}= \hbar v_…
Enhancement of nuclear spin coherence times by driving dynamic nuclear polarization at defect centers in solids
Gargee Sharma, Torsten Gaebel, Ewa Rej +3
The hyperpolarization of nuclear spins can enable powerful imaging and sensing techniques provided the hyperpolarization is sufficiently long-lived. Recent experiments on nanodiamo…
Tunable topological Nernst effect in 2D transition metal dichalcogenides
Gargee Sharma
Two dimensional semiconducting transition metal dichalcogenides (TMDs) exhibit an intrinsic Ising spin orbit coupling (SOC) along with a valley contrasting Berry curvature, which c…
Chiral anomaly as origin of planar Hall effect in Weyl semimetals
S. Nandy, Gargee Sharma, A. Taraphder +1
In condensed matter physics, the term "chiral anomaly" implies the violation of the separate number conservation laws of Weyl fermions of different chiralities in the presence of p…
Interplay of valley polarization and dynamic nuclear polarization in 2D transition metal dichalcogenides
Gargee Sharma, Sophia E. Economou, Edwin Barnes
The interplay of Ising spin-orbit coupling and non-trivial band topology in transition metal dichalcogenides (TMDs) produces anomalous transport and optical properties that are ver…
Suppression of Hall number due to charge density wave order in high- cuprates
Gargee Sharma, S. Nandy, A. Taraphder +1
Understanding the pseudogap phase in hole-doped high temperature cuprate superconductors remains a central challenge in condensed matter physics. From a host of recent experiments…
Yu-Shiba-Rusinov states and topological superconductivity in Ising paired superconductors
Gargee Sharma, Sumanta Tewari
An unusual form of superconductivity, called Ising superconductivity, has recently been uncovered in mono- and few-layered transition metal dichalcogenides. This 2D superconducting…
Tunneling conductance for Majorana fermions in spin-orbit coupled semiconductor-superconductor heterostructures using superconducting leads
Gargee Sharma, Sumanta Tewari
It has been recently pointed out that the use of a superconducting (SC) lead instead of a normal metal lead can suppress the thermal broadening effects in tunneling conductance fro…
Nernst and magneto-thermal conductivity in a lattice model of Weyl fermions
Gargee Sharma, Pallab Goswami, Sumanta Tewari
Weyl semimetals (WSM) are topologically protected three dimensional materials whose low energy excitations are linearly dispersing massless Dirac fermions, possessing a non-trivial…
A calculation for polar Kerr effect in high temperature cuprate superconductors
Gargee Sharma, Sumanta Tewari, Pallab Goswami +2
A mechanism is proposed for the tantalizing evidence of polar Kerr effect in a class of high temperature superconductors--the signs of the Kerr angle from two opposite faces of the…