223 citations · 1k across the 38 of their papers we have counts for
38 papers
Channel-selective magnetic filtering in a nodal-line semimetal
Hironmoy Pratihar, Alessandro De Martino, Arijit Kundu
We study quantum transport through a magnetic barrier in a nodal-line semimetal. When the Fermi energy lies near the nodal ring, the Fermi surface has toroidal geometry. Each cross…
Non-Bloch band theory of boundary-controlled magnon edge modes in an antiferromagnetic chain
Suman Debnath, Sonu Verma, Rohit Mukherjee +1
We define a winding number within the Non-Bloch band theory framework that captures the emergence of magnon edge modes in a one-dimensional antiferromagnetic spin chain, even when…
Skyrmion stripes in twisted double bilayer graphene
Debasmita Giri, Dibya Kanti Mukherjee, H. A. Fertig +1
Two dimensional moiré systems have recently emerged as a platform in which the interplay between topology and strong correlations of electrons play out in non-trivial ways. Among t…
Intrinsic nonlinear thermal Hall transport of magnons: A Quantum kinetic theory approach
Harsh Varshney, Rohit Mukherjee, Arijit Kundu +1
We present a systematic study of the nonlinear thermal Hall responses in bosonic systems using the quantum kinetic theory framework. We demonstrate the existence of an intrinsic no…
Operator correlations in a quenched non-Hermitian Luttinger liquid
Ashutosh Dubey, Sourav Biswas, Arijit Kundu
We study operator correlations of a spinful Luttinger liquid after introducing a non-Hermitian interaction quench, yielding supersonic modes and dominant superconducting correlatio…
Two-channel Kondo problem in coupled interacting helical liquids
Sourav Biswas, Alessandro De Martino, Sumathi Rao +1
We study the two-channel Kondo problem in the context of two interacting helical liquids coupled to a spin- magnetic impurity. We show that the interactions between the tw…
Non-linear magnon transport in a bilayer van der Waals antiferromagnets
Rohit Mukherjee, Sonu Verma, Arijit Kundu
In this paper, we study the Berry curvature induced linear and nonlinear magnon transport in bilayer van der Waals antiferromagnets, where we deduce forms for the spin and energy c…
Josephson-Current Signatures of Unpaired Floquet Majorana Bound States
Rekha Kumari, Babak Seradjeh, Arijit Kundu
We theoretically study the transport signatures of unpaired Floquet Majorana bound states in the Josephson current of weakly linked, periodically driven topological superconductors…
Perpendicular electric field drives Chern transitions and layer polarization changes in Hofstadter bands
Pratap Chandra Adak, Subhajit Sinha, Debasmita Giri +10
Moiré superlattices engineer band properties and enable observation of fractal energy spectra of Hofstadter butterfly. Recently, correlated-electron physics hosted by flat bands in…
Observation of Fermi liquid phase with broken symmetry in a single crystalline nanorod of PrIrO
Bikash Ghosh, Abhishek Juyal, Sourav Biswas +3
We report experimental evidence of emergent broken symmetry Fermi liquid state in an isolated single crystalline nanorod of . We find clear signature of the onse…
Broken symmetry and competing orders in Weyl semimetal interfaces
Ritajit Kundu, H. A. Fertig, Arijit Kundu
We consider interaction-induced broken symmetry states of two Weyl semimetal surfaces with multiple Fermi-arc (FA) states. In the presence of inter- and intra-surface Coulomb inter…
Schwinger-Boson mean-field study of spin-1/2 -- model in honeycomb lattice: thermal Hall signature
Rohit Mukherjee, Ritajit Kundu, Avinash Singh +1
We theoretically investigate, within the Schwinger-Boson mean-field theory, the transition from a gapped quantum spin-liquid, in a - Heisenberg spin-1/2 system in…
Plasmon in Nonsymmorphic Dirac semimetals
Debasmita Giri, Arijit Kundu
We study the collective charge-density modes (plasmons) of two-dimensional nonsymmorphic Dirac semimetals, within the random-phase approximation (RPA) in presence of Coulomb intera…
Dipolar optical plasmon in thin-film Weyl semimetals
Debasmita Giri, Dibya Kanti Mukherjee, Sonu Verma +2
In a slab geometry with large surface-to-bulk ratio, topological surface states such as Fermi arcs for Weyl or Dirac semimetals may dominate their low-energy properties. We investi…
Dynamical polarization and plasmons in noncentrosymmetric metals
Sonu Verma, Arijit Kundu, Tarun Kanti Ghosh
We study the dynamical polarization function and plasmon modes for spin-orbit coupled noncentrosymmetric metals (NCMs). These systems have different Fermi surface topology for Ferm…
Chiral Luttinger liquids in graphene tuned by irradiation
Sourav Biswas, Tridev Mishra, Sumathi Rao +1
We show that chiral co-propagating Luttinger liquids can be created and tuned by shining high frequency, circularly polarized light, normal to the layers, with different polarizati…
RKKY coupling in Weyl semimetal thin films
Sonu Verma, Debasmita Giri, H. A. Fertig +1
We consider the effective coupling between impurity spins on surfaces of a thin-film Weyl semimetal within Ruderman-Kittel-Kasuya-Yoshida (RKKY) theory. If the spins are on the sam…
Quantum transport simulation of non-local response in Weyl semimetals
Keshav Pareek, Arijit Kundu
We numerically study the non-local transport signature in Weyl semimetal as a test for interconnectedness of the surface states, using a recursive Green's function method. We drive…
RKKY interaction in Mn-doped 4 4 Luttinger systems
Sonu Verma, Arijit Kundu, Tarun Kanti Ghosh
We consider Mn-doped bulk zinc-blende semiconductors described by the 4 4 Luttinger Hamiltonian. In these semiconductors, Mn atom acts as an acceptor providing the system…
Non-local control of spin-spin correlation in finite geometry helical edge
Sonu Verma, Arijit Kundu
An infinite edge of a quantum Hall system prohibits indirect exchange coupling between two spins whereas a quantum spin-Hall edge prohibits out-of-plane coupling. In this study we…
Spin Response and Collective Modes in Simple Metal Dichalcogenides
Dibya Kanti Mukherjee, Arijit Kundu, H. A. Fertig
Transition metal dichalcogenide (TMD) monolayers are interesting materials in part because of their strong spin-orbit coupling. This leads to intrinsic spin-splitting of opposite s…
Bulk-edge correspondence and new topological phases in periodically driven spin-orbit coupled materials in the low frequency limit
Ruchi Saxena, Sumathi Rao, Arijit Kundu
We study the topological phase transitions induced in spin-orbit coupled materials with buckling like silicene, germanene, stanene, etc, by circularly polarised light, beyond the h…
Transport through Andreev bound states in a Weyl semimetal quantum dot
Dibya Kanti Mukherjee, Sumathi Rao, Arijit Kundu
We study transport through a Weyl semimetal quantum dot sandwiched between an -wave superconductor and a normal lead. The conductance peaks at regular intervals and exhibits dou…
Spin-dependent Andreev reflection in spin-orbit coupled systems by breaking time-reversal symmetry
Dibya Kanti Mukherjee, Joanna Hutchinson, Arijit Kundu
We study theoretically the differential conductance at a junction between a time reversal symmetry broken spin orbit coupled system with a tunable band gap and a superconductor. We…