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41 papers
Spin Configurations of Anyonic excitations in Moiré Fractional Chern Insulators
Vadym Apalkov, Tapash Chakraborty
We have examined the nature of elementary excitations in particular, their spin polarization, in recently discovered zero-field fractional Chern insulator in twisted bilayer MoTe$_…
Discernible signatures of fractionally charged anyons in a Pfaffian-Laughlin state
Vadym Apalkov, Tapash Chakraborty
Understanding the nature of quasihole excitations, i.e., anyons that have fractional charge and fractional statistics, has been a challenging problem in condensed matter physics. O…
Selective enhancement of Coulomb interactions in planar Weyl fermions
Vadym Apalkov, Wenchen Luo, Tapash Chakraborty
We report on our study of the electron interaction effects in topological two-dimensional (2D) materials placed in a quantizing magnetic field. Taking our cue from a recent experim…
Ultrafast Field-driven Valley Polarization of Transition Metal Dichalcogenide Quantum Dots
Aranyo Mitra, Ahmal Jawad Zafar, Vadym Apalkov
We study theoretically the electron dynamics of transition metal dichalcogenide quantum dots in the field of an ultrashort and ultrafast circularly polarized optical pulse. The qua…
Interacting Dirac fermions and the rise of Pfaffians in graphene
Vadym Apalkov, Tapash Chakraborty
Fractional Quantum Hall effect (FQHE) is a unique many-body phenomenon, which was discovered in a two-dimensional electron system placed in a strong perpendicular magnetic field. I…
Three-level Spaser System: a Semi-Classical Analysis
Rupesh Ghimire, Dalton . C. Hunley, Fatemeh Nematollahi +3
We theoretically study a nanospaser system, which consists of a spherical silver nanoparticle embedded inside a sphere composed of dye molecules. The gain of the system, dye molecu…