51 citations · 151 across the 11 of their papers we have counts for
11 papers
Topological phases and Edge states in an exactly solvable Gamma matrix model
Akhil Pravin Furtado, Kusum Dhochak
We study the phases of an exactly solvable one dimensional model with dimensional matrix degrees of freedom on each site. The matrix model has a large set of competing…
Exactly Solvable 1D Quantum Models with Gamma Matrices
Yash Chugh, Kusum Dhochak, Uma Divakaran +2
In this paper, we write exactly solvable generalizations of 1-dimensional quantum XY and Ising-like models by using -dimensional Gamma () matrices as the degrees of freedom…
Phases and Quantum Phase Transitions in an Anisotropic Ferromagnetic Kitaev-Heisenberg- Magnet
Animesh Nanda, Kusum Dhochak, Subhro Bhattacharjee
We study the spin- ferromagnetic Heisenberg-Kitaev- model in the anisotropic (Toric code) limit to reveal the nature of the quantum phase transition between the gapped $Z_2…
Interplay of uniform U(1) quantum spin liquid and magnetic phases in rare earth pyrochlore magnets : a fermionic parton approach
Sambuddha Sanyal, Kusum Dhochak, Subhro Bhattacharjee
We study the uniform time reversal invariant quantum spin liquid (QSL) with low energy fermionic quasi-particles for rare earth pyrochlore magnets and explore its magnetic i…
Edge--Entanglement correspondence for gapped topological phases with symmetry
Maciej Koch-Janusz, Kusum Dhochak, Erez Berg
The correspondence between the edge theory and the entanglement spectrum is firmly established for the chiral topological phases. We study gapped, topologically ordered, non-chiral…
A Kondo route to spin inhomogeneities in the honeycomb Kitaev model
S. D. Das, K. Dhochak, V. Tripathi
Paramagnetic impurities in a quantum spin-liquid can result in Kondo effects with highly unusual properties. We have studied the effect of locally exchange-coupling a paramagnetic…
Spontaneous Layer Polarization and Conducting Domain Walls in the Quantum Hall Regime of Bilayer Graphene
Kusum Dhochak, Efrat Shimshoni, Erez Berg
Bilayer graphene subjected to perpendicular magnetic and electric fields displays a subtle competition between different symmetry broken phases, resulting from an interplay between…
Noise studies of magnetization dynamics in dilute magnetic semiconductor heterostructures
V. Tripathi, Kusum Dhochak, B. A. Aronzon +3
We study theoretically and experimentally the frequency and temperature dependence of resistivity noise in semiconductor heterostructures delta-doped by Mn. The resistivity noise i…
Charge inhomogeneities and transport in semiconductor heterostructures with a manganese -layer
Vikram Tripathi, Kusum Dhochak, B. A. Aronzon +5
We study experimentally and theoretically the effects of disorder, nonlinear screening, and magnetism in semiconductor heterostructures containing a -layer of Mn, where the char…
Magnetic impurities in the honeycomb Kitaev model
Kusum Dhochak, R. Shankar, V. Tripathi
We study the effect of coupling magnetic impurities to the honeycomb lattice spin-1/2 Kitaev model in its spin liquid phase. We show that a spin-S impurity coupled to the Kitaev mo…
Kondo Lattice Scenario in Disordered Semiconductor Heterostructures
Kusum Dhochak, V. Tripathi
We study nuclear relaxation in the presence of localized electrons in a two-dimensional electron gas in a disordered delta-doped semiconductor heterostructure and show that this me…