347 citations · 872 across the 36 of their papers we have counts for
36 papers
Anomalous valley Hall dynamics of exciton-polaritons
Xingzhou Chen, Yuanjun Guan, Areg Ghazaryan +6
The valley degree of freedom in atomically thin transition-metal dichalcogenides provides a natural binary index for information processing. Exciton-polaritons formed under strong…
Nonadiabatic laser-induced alignment dynamics of alkali dimers on the surface of a helium droplet
Henrik H. Kristensen, Lorenz Kranabetter, Areg Ghazaryan +6
Alkali dimers, , located on the surface of a helium nanodroplet, are set into rotation through the polarizability interaction with a nonresonant 1-ps-long laser puls…
Classical 'spin' filtering with two degrees of freedom and dissipation
Atul Varshney, Areg Ghazaryan, Artem G. Volosniev
Coupling of angular motion to a spin degree of freedom gives rise to various transport phenomena in quantum systems that are beyond the standard paradigms of classical physics. Her…
Nonadiabatic Laser-Induced Alignment Dynamics of Molecules on a Surface
Lorenz Kranabetter, Henrik H. Kristensen, Areg Ghazaryan +7
We demonstrate that a sodium dimer, Na(), residing on the surface of a helium nanodroplet, can be set into rotation by a nonresonant 1.0 ps infrared laser pulse.…
Linear rotor in an ideal Bose gas near the threshold for binding
Tibor Dome, Artem G. Volosniev, Areg Ghazaryan +3
We study a linear rotor in a bosonic bath within the angulon formalism. Our focus is on systems where isotropic or anisotropic impurity-boson interactions support a shallow bound s…
Emergence of a Bose polaron in a small ring threaded by the Aharonov-Bohm flux
Fabian Brauneis, Areg Ghazaryan, Hans-Werner Hammer +1
The model of a ring threaded by the Aharonov-Bohm flux underlies our understanding of a coupling between gauge potentials and matter. The typical formulation of the model is based…
Rotor Lattice Model of Ferroelectric Large Polarons
Georgios M. Koutentakis, Areg Ghazaryan, Mikhail Lemeshko
We present a minimal model of charge transport in hybrid perovskites, which provides an intuitive explanation for the recently proposed formation of ferroelectric large polarons. W…
Optical manipulation of layer-valley coherence via strong exciton-photon coupling in microcavities
Mandeep Khatoniar, Nicholas Yama, Areg Ghazaryan +4
Coherent control and manipulation of quantum degrees of freedom such as spins forms the basis of emerging quantum technologies. In this context, the robust valley degree of freedom…
Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity
Areg Ghazaryan, Tobias Holder, Erez Berg +1
Motivated by the recent discoveries of superconductivity in bilayer and trilayer graphene, we theoretically investigate superconductivity and other interaction-driven phases in mul…
Dissipative dynamics of an impurity with spin-orbit coupling
Areg Ghazaryan, Alberto Cappellaro, Mikhail Lemeshko +1
Brownian motion of a mobile impurity in a bath is affected by spin-orbit coupling (SOC). Here, we discuss a Caldeira-Leggett-type model that can be used to propose and interpret qu…
Deep learning extraction of band structure parameters from density of states: a case study on trilayer graphene
Paul Henderson, Areg Ghazaryan, Alexander A. Zibrov +2
The development of two-dimensional materials has resulted in a diverse range of novel, high-quality compounds with increasing complexity. A key requirement for a comprehensive quan…
Anomalous Shiba states in topological iron-based superconductors
Areg Ghazaryan, Ammar Kirmani, Rafael M. Fernandes +1
We demonstrate the formation of robust zero energy modes close to magnetic impurities in the iron-based superconductor FeSeTe. We find that the Zeeman field generated b…
Topological charges of periodically kicked molecules
Volker Karle, Areg Ghazaryan, Mikhail Lemeshko
We show that the simplest of existing molecules -- closed-shell diatomics not interacting with one another -- host topological charges when driven by periodic far-off-resonant lase…
Unconventional superconductivity in systems with annular Fermi surfaces: Application to rhombohedral trilayer graphene
Areg Ghazaryan, Tobias Holder, Maksym Serbyn +1
We show that in a two-dimensional electron gas with an annular Fermi surface, long-range Coulomb interactions can lead to unconventional superconductivity by the Kohn-Luttinger mec…
Half and quarter metals in rhombohedral trilayer graphene
Haoxin Zhou, Tian Xie, Areg Ghazaryan +8
Ferromagnetism is most common in transition metal compounds but may also arise in low-density two-dimensional electron systems, with signatures observed in silicon, III-V semicondu…
Interplay between friction and spin-orbit coupling as a source of spin polarization
Artem G. Volosniev, Hen Alpern, Yossi Paltiel +3
We study an effective one-dimensional quantum model that includes friction and spin-orbit coupling (SOC), and show that the model exhibits spin polarization when both terms are fin…
Shadow surface states in topological Kondo insulators
Areg Ghazaryan, Emilian M. Nica, Onur Erten +1
The surface states of 3D topological insulators in general have negligible quantum oscillations when the chemical potential is tuned to the Dirac points. In contrast, we find that…
Filtering Spins by Scattering from a Lattice of Point Magnets
Areg Ghazaryan, Mikhail Lemeshko, Artem G. Volosniev
Nature creates electrons with two values of the spin projection quantum number. In certain applications, it is important to filter electrons with one spin projection from the rest.…
An analytic model of chiral-induced spin selectivity
Areg Ghazaryan, Yossi Paltiel, Mikhail Lemeshko
Organic materials are known to feature long spin-diffusion times, originating in a generally small spin-orbit coupling observed in these systems. From that perspective, chiral mole…
A Quantum Impurity Model for Anyons
Enderalp Yakaboylu, Areg Ghazaryan, Douglas Lundholm +3
One of the hallmarks of quantum statistics, tightly entwined with the concept of topological phases of matter, is the prediction of anyons. Although anyons are predicted to be real…
Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors
Areg Ghazaryan, Pedro L. S. Lopes, Pavan Hosur +2
In the superconducting regime of FeTeSe, there exist two types of vortices which are distinct by the presence or absence of zero energy states in their core. To under…
Optical control over bulk excitations in fractional quantum Hall systems
Tobias Graß, Michael Gullans, Przemyslaw Bienias +4
Local excitations in fractional quantum Hall systems are amongst the most intriguing objects in condensed matter, as they behave like particles of fractional charge and fractional…
Anisotropic exciton transport in transition-metal dichalcogenides
Areg Ghazaryan, Mohammad Hafezi, Pouyan Ghaemi
Due to the Coulomb interaction exciton eignestates in monolayer transitional metal dichalcogenides are coherent superposition of two valleys. The exciton band which couples to the…
Odd-frequency Pairing in the Edge States of Superconducting Pnictides in the Coexistence Phase with Antiferromagnetism
Cody Youmans, Areg Ghazaryan, Mehdi Kargarian +1
In several members of the pnictide materials, spin density wave order coexists with superconductivity over a range of dopings and temperature. In this paper we show that odd-freque…