7 papers
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…