243 citations · 323 across the 14 of their papers we have counts for
14 papers
Dzyaloshinskii-Moriya torque-driven resonance in antiferromagnetic α-Fe2O3
Qiyao Liu, Taeheon Kim, Kyusup Lee +4
We examine the high-frequency optical mode of α-Fe2O3 and report that Dzyaloshinskii-Moriya (DM) interaction generates a new type of torque on the magnetic resonance. Using a conti…
Room temperature nonlinear Hall effect and wireless RF rectification in Weyl semimetal TaIrTe4
Dushyant Kumar, Chuang-Han Hsu, Raghav Sharma +6
The nonlinear Hall effect (NLHE), which can produce a transverse voltage without any magnetic field, is a potential alternative for rectification or frequency doubling. However, th…
Optical visualization of the enhanced spin Hall effect in bismuth doped silicon
Taiki Nishijima, Yakun Liu, Dushyant Kumar +8
Direct visualizations of spin accumulation due to the enhanced spin Hall effect (SHE) in bismuth (Bi) - doped silicon (Si) at room temperature are realized by using helicity-depend…
Symmetry Algebras of Stringy Cosets
Dushyant Kumar, Menika Sharma
We find the symmetry algebras of cosets which are generalizations of the minimal-model cosets, of the specific form . We study…
A Framework for Non-linear Time Evolution and Field Theories on State-Dependent Geometries
Dushyant Kumar
We introduce a framework for non-linear time evolution in quantum mechanics as a natural non-linear generalization of the Schrodinger equation. Within our framework, we derive simp…
Conformal embeddings and higher-spin bulk duals
Dushyant Kumar, Menika Sharma
It is well-known that conformal embeddings can be used to construct non-diagonal modular invariants for affine lie algebras. This idea can be extended to construct infinite series…
Defect-induced photoluminescence of strontium titanate and its modulation by electrostatic gating
Dushyant Kumar, R. C. Budhani
The photoluminescence (PL) spectra of Ar-ion irradiated single crystals of SrTiO3 (STO) excited by the 325 nm line of a He-Cd laser are compared with those of pristine crystals, ep…
On a Generalization of GKO Coset Construction of Conformal Field Theories
Dushyant Kumar
We introduce a generalization of Goddard-Kent-Olive (GKO) coset construction of two dimensional conformal field theories based on a choice of a scaled affine subalgebra $\hat{\math…
Dynamics of photo-generated non-equilibrium electronic states in Ar ion irradiated SrTiO
Dushyant Kumar, Z. Hossain, R. C. Budhani
A metallic surface is realized on stoichiometric and insulating (100) SrTiO by Ar - ion irradiation. The sheet carrier density and Hall mobility of the layer are $4.0…
Observation of transient superconductivity at the LaAlO/SrTiO interface
Gopi Nath Daptary, Shelender Kumar, Pramod Kumar +6
We report the observation of a magnetic field assisted transient superconducting state in the two dimensional electron gas existing at the interface of LaAlO/SrTiO heterost…
Two-dimensional Yang-Mills Theory on Recursive Infinite Genus Surfaces
Dushyant Kumar
The partition function of Euclidean Yang-Mills theory on two dimensional surfaces is given by the Migdal formula. It involves the area and topological characteristics of the surfac…
Weak Coupling Expansion of Yang-Mills Theory on Recursive Infinite Genus Surfaces
Debashis Ghoshal, Camillo Imbimbo, Dushyant Kumar
We analyze the partition function of two dimensional Yang-Mills theory on a family of surfaces of infinite genus. These surfaces have a recursive structure, which was used by one o…
Giant coercivity enhancement and dimensional crossover of superconductivity in Co2FeSi-NbN nanoscale bilayers
Anurag Gupta, Gyanendra Singh, Dushyant Kumar +2
Proximity coupling and magnetic switching dynamics are shown to be correlated in bilayers (B) of fully spin polarized ferromagnet (F) Co2FeSi and superconductor (S) NbN. The upper…
Honeycomb antiferromagnet with a triply degenerate dimer ground state
Rakesh Kumar, Dushyant Kumar, Brijesh Kumar
We present an antiferromagnetic quantum spin-1/2 model on honeycomb lattice. It has two parts, one of which is the usual nearest-neighbor Heisenberg model. The other part is a cert…