47 citations · 165 across the 22 of their papers we have counts for
22 papers
Geometric Photon-drag Effect in Unconventional Magnets
Bristi Ghosh, Vivek Pandey, Malay Bandyopadhyay +2
The photon-drag effect is a nonlinear optical phenomenon in which the finite momentum carried by incident photons is transferred to charge carriers, thereby generating a dc photocu…
Quantum Geometry Driven Optical Responses in 1T-MX Monolayers: A Symmetry-Constrained Slater-Koster Tight-Binding Approach
Bikram Baruah, Snehasish Nandy, Subhasis Panda
Centrosymmetric 1T-MX monolayers(MLs) have attracted considerable attention owing to their intriguing transport properties and potential technological applications arising from…
Spin-phonon interaction in a symmetry-enforced spin-polarized state
Suman Kalyan Pradhan, Dayal Das, Shubham Patel +8
Symmetry-governed magnetic materials have emerged as a promising platform for spintronic functionalities without net magnetization or stray magnetic fields, motivating the explorat…
Giant Spin Magnetization from Quantum Geometry in Altermagnets
Neelanjan Chakraborti, Sudeep Kumar Ghosh, Snehasish Nandy
Altermagnets host spin-split band structures while exhibiting vanishing equilibrium spin magnetization, making field-induced responses a direct probe of their quantum geometry. A c…
Semiclassical theory of frequency dependent linear magneto-optical transport in Weyl semimetals
Azaz Ahmad, Pankaj Bhalla, Snehasish Nandy +1
We develop a semiclassical Boltzmann theory for frequency-dependent magneto-optical transport in Weyl semimetals (WSMs), incorporating momentum-dependent relaxation via a scatterin…
Magnetic field Controlled Anderson Delocalization in a Spinful Non-Hermitian Chain
Moirangthem Sanahal, Subhasis Panda, Snehasish Nandy
Anderson localization (AL) and the non-Hermitian skin effect (NHSE) represent two paradigmatic localization phenomena driven, respectively, by disorder and non-Hermiticity. In one-…
Probing persistent spin textures through nonlinear magnetotransport
Neelanjan Chakraborti, Akash Dey, Snehasish Nandy +2
Persistent spin textures (PST) are special spin configurations in spin-orbit-coupled systems in which the spin polarization acquires a symmetry-enforced momentum-independent orient…
Quantum geometry-driven photogalvanic responses in semi-Dirac systems
Bristi Ghosh, Malay Bandyopadhyay, Snehasish Nandy
The photogalvanic effect (PGE), a fundamental nonlinear optical phenomenon in non-centrosymmetric materials, generates direct photocurrent under polarized light. Using quantum kine…
Intrinsic Nonlinear Gyrotropic Magnetic Effect Governed by Spin-Rotation Quantum Geometry
Neelanjan Chakraborti, Snehasish Nandy, Sudeep Kumar Ghosh
Nonlinear magnetic response driven by time-periodic magnetic fields offers a distinct route to probe spin-resolved quantum geometry beyond conventional electric-field-driven nonlin…
Gyrotropic Fingerprints of Magnetic Topological Insulator-Unconventional Magnet Interfaces
Neelanjan Chakraborti, Snehasish Nandy, Sudeep Kumar Ghosh
Unambiguously identifying unconventional magnetic orders requires probes directly sensitive to their momentum-dependent spin-split band structures. Here, we employ a Zeeman quantum…
Electric field induced Berry curvature dipole and non-linear anomalous Hall effects in higher wave symmetric unconventional magnets
Srimayi Korrapati, Snehasish Nandy, Sumanta Tewari
We investigate the second-order anomalous Hall response in two-dimensional higher-wave symmetric magnets, including the recently discovered class of collinear magnets known as alte…
Zeeman Quantum Geometry as a Probe of Unconventional Magnetism
Neelanjan Chakraborti, Sudeep Kumar Ghosh, Snehasish Nandy
Unconventional magnets with momentum-dependent spin-splitting but zero net magnetization form a recently identified class of collinear magnets that are challenging to probe via con…
Unveiling Novel Resonant Interband Contribution to Polarizability in three-dimensional systems
Vivek Pandey, Snehasish Nandy, Pankaj Bhalla
Polarizability plays an essential role in characterizing key phenomena, such as the screening effects, collective excitations, and dielectric functions present in the system. In th…
Approximate half-integer quantization in anomalous planar transport in -wave altermagnets
Srimayi Korrapati, Snehasish Nandy, Sumanta Tewari
We investigate anomalous planar transport phenomena in a recently identified class of collinear magnetic materials known as -wave altermagnets. The anomalous planar effects mani…
Gauge Field Induced Unconventional Skin Effect in Spinful Non-Hermitian Systems
Moirangthem Sanahal, Subhasis Panda, Snehasish Nandy
The non-Hermitian skin effect (NHSE), a hallmark of non-Hermitian systems, stems from the topological nature of complex energy spectra, typically characterized by a non-zero spectr…
Role of Disorder in Third-order Anomalous Hall Effect in Time-reversal Symmetric Systems
Chanchal K. Barman, Arghya Chattopadhyay, Surajit Sarkar +2
The third-order anomalous Hall effect (TOAHE) driven by Berry connection polarizability in Dirac materials offers a promising avenue for exploring quantum geometric phenomena. We i…
Fingerprint of Non-Hermiticity in d-wave Altermagnet
Gaurab Kumar Dash, Subhasis Panda, Snehasish Nandy
We develop the non-Hermitian counterpart of a new class of collinear magnets, dubbed altermagnets, delineated by net zero magnetization with momentum-dependent spin-splitting bands…
Nonlinear anomalous transverse responses induced by Berry curvature quadrupole in systems with broken time-reversal symmetry
Srimayi Korrapati, Snehasish Nandy, Sumanta Tewari
Recent theoretical work has shown that higher-order moments of the Berry curvature, e.g., Berry curvature quadrupole and hexapole moments, can produce the leading order nonlinear a…
Low-energy effective theory and anomalous Hall effect in monolayer
S. Nandy, D. A. Pesin
We develop a symmetry-based low-energy theory for monolayer in its 1T phase, which includes eight bands (four orbitals, two spins). This model reduces t…
Non-linear transport without spin-orbit coupling or warping in two-dimensional Dirac semimetals
Sai Satyam Samal, S. Nandy, Kush Saha
It has recently been realized that the first-order moment of the Berry curvature, namely the Berry curvature dipole (BCD) can give rise to non-linear current in a wide variety of t…
Chirality-dependent planar Hall effect in inhomogeneous Weyl semimetals
Suvendu Ghosh, Debabrata Sinha, Snehasish Nandy +1
The planar Hall effect (PHE), the appearance of an in-plane transverse voltage in the presence of co-planar electric () and magnetic () fields, occurs in re…
Anomalous transport near the Lifshitz transition at the LaAlO/SrTiO interface
S. Nandy, N. Mohanta, S. Acharya +1
The two-dimensional electron liquid, at the (001) interface between band insulators {L}a{A}l{O} and {S}r{T}i{O}, undergoes Lifshitz transition as the interface is doped wit…