41 citations · 178 across the 16 of their papers we have counts for
16 papers
Origin, strength, and speed of the nonlinear optical response of transparent conducting oxides to single-cycle optical pulses
Ieng-Wai Un, Subhajit Sarkar, Yonatan Sivan
We present a first-principles study of the nonlinear optical response of transparent conducting oxides at the nanoscale due to excitation by intense, extremely short pulses based o…
Quantum-optical theory of the few femtosecond nonlinear optical response of Drude metals with a non-parabolic conduction band
Ieng-Wai Un, Subhajit Sarkar, Yonatan Sivan
We develop an energy-space density matrix framework to investigate the interaction of extremely short optical pulses (ESPs) with transparent conducting oxides (TCOs). This approach…
Time Crystals from single-molecule magnet arrays
Subhajit Sarkar, Yonatan Dubi
Time crystals, a unique non-equilibrium quantum phenomenon with promising applications in current quantum technologies, mark a significant advance in quantum mechanics. Although tr…
Ballistic vs. diffusive transport in metals
Yonatan Sivan, Ieng-Wai Un, Subhajit Sarkar
Using the Boltzmann transport model, we show that, somewhat unintuitively, ballistic transport of electrons in metals is weaker than diffusive transport. This happens because the f…
Temperature-dependence of the chirality-induced spin selectivity effect -- experiments and theory
Seif Alwan, Subhajit Sarkar, Amos Sharoni +1
The temperature dependence of the chirality-induced spin selectivity (CISS) effect can be used to discriminate between different theoretical proposals for the mechanism of the CISS…
An electronic-based model of the optical nonlinearity of low-electron-density-Drude materials
Ieng Wai Un, Subhajit Sarkar, Yonatan Sivan
Low electron density Drude (LEDD) materials such as indium tin oxide (ITO) are receiving considerable attention because of their combination of CMOS compatibility, unique epsilon-n…
The electronic and thermal response of low electron density Drude materials to ultrafast optical illumination
Subhajit Sarkar, Ieng Wai Un, Yonatan Sivan
Many low electron density Drude (LEDD) materials such as transparent conductive oxide or nitrides have recently attracted interest as alternative plasmonic materials and future non…
Emergence and Dynamical Stability of Charge Time-Crystal in a Current-Carrying Quantum Dot Simulator
Subhajit Sarkar, Yonatan Dubi
Periodically-driven open quantum systems that never thermalize exhibit a discrete time-crystal behavior, a non-equilibrium quantum phenomenon that has shown promise in quantum info…
Theory of Non-equilibrium "Hot" Carriers in Direct Band-gap Semiconductors Under Continuous Illumination
Subhajit Sarkar, Ieng-Wai Un, Yonatan Sivan +1
The interplay between the illuminated excitation of carriers and subsequent thermalization and recombination leads to the formation of non-equilibrium distributions for the "hot" c…
Signatures of discrete time-crystallinity in transport through an open Fermionic chain
Subhajit Sarkar, Yonatan Dubi
Discrete time-crystals are periodically driven quantum many-body systems with broken discrete-time translational symmetry, a non-equilibrium steady state representing self-organiza…
Environment assisted and environment hampered efficiency at maximum power in a molecular photo cell
Subhajit Sarkar, Yonatan Dubi
The molecular photo cell, i.e., a single molecule donor-acceptor complex, beside being technologically important, is a paradigmatic example of a many-body system operating in stron…
Defect production and quench dynamics in the three-dimensional Kitaev model
Subhajit Sarkar, Dibyendu Rana, Saptarshi Mandal
We study the quench dynamics of the three-dimensional Kitaev (spin) model under a linear drive using both exact numerical calculations and analytical "independent crossing approxim…
Fermi surface instabilities of symmetry-breaking and topological types on the surface of a three-dimensional topological insulator
Subhajit Sarkar
The emergence of the Pomeranchuk instability (PI) in a Helical Fermi liquid (HFL) residing on the surface of a three-dimensional topological insulator (3D TI) is addressed at the m…
Delocalization of charge and current in a chiral quasiparticle wave-packet
Subhajit Sarkar
A chiral quasi-particle wave packet (c-QPWP) is defined as a conventional superposition of chiral quasi-particle states corresponding to an interacting electron system in two dimen…
Semi-phenomenological analysis of neutron scattering results for quasi-two dimensional quantum anti-ferromagnet
Subhajit Sarkar, Ranjan Chaudhury, Samir K. Paul
The available results from the inelastic neutron scattering experiment performed on the quasi-two dimensional spin anti-ferromagnetic material have been…
The connection between vortex-like topological excitations and conventional excitations in quantum ferromagnetic spin systems on two dimensional lattice and their stability
Subhajit Sarkar, Ranjan Chaudhury, Samir K. Paul
We present a scheme for the construction of quantum states of vortex like topological excitations corresponding to spin- 1/2 strongly XY anisotropic nearest neighbor Heisenberg Fer…