3.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Maryland, College ParkUS1.9k papers
- National Institute of Standards and TechnologyUS828 papers
- Joint Center for Quantum Information and Computer ScienceUS359 papers
- University of DelawareUS94 papers
- Harvard UniversityUS82 papers
- University of Colorado BoulderUS73 papers
- California Institute of TechnologyUS61 papers
- Princeton UniversityUS61 papers
- University of California, Santa BarbaraUS60 papers
- Joint Institute for Laboratory AstrophysicsUS52 papers
- DEVCOM Army Research LaboratoryUS51 papers
- Massachusetts Institute of TechnologyUS50 papers
26 papers · 2 filters
Optical imprinting of superlattices in two-dimensional materials
Hwanmun Kim, Hossein Dehghani, Hideo Aoki +2
We propose an optical method of shining circularly polarized and spatially periodic laser fields to imprint superlattice structures in two-dimensional electronic systems. By changi…
Drag viscosity of metals and its connection to Coulomb drag
Yunxiang Liao, Victor Galitski
Recent years have seen a surge of interest in studies of hydrodynamic transport in electronic systems. We investigate the electron viscosity of metals and find a new component that…
Spontaneous symmetry breaking in a honeycomb lattice subject to a periodic potential
Robert E. Throckmorton, S. Das Sarma
Motivated by recent developments in twisted bilayer graphene moiré superlattices, we investigate the effects of electron-electron interactions in a honeycomb lattice with an applie…
Möbius Insulator and Higher-Order Topology in MnBiTe
Rui-Xing Zhang, Fengcheng Wu, S. Das Sarma
We propose MnBiTe as a magnetically tunable platform for realizing various symmetry-protected higher-order topology. Its canted antiferromagnetic phase can host exo…
Detecting Acoustic Blackbody Radiation with an Optomechanical Antenna
Robinjeet Singh, Thomas P. Purdy
Nanomechanical systems are generally embedded in a macroscopic environment where the sources of thermal noise are difficult to pinpoint. We engineer a silicon nitride membrane opto…
Anomalous Phase Dynamics of Driven Graphene Josephson Junctions
S. S. Kalantre, F. Yu, M. T. Wei +5
Josephson junctions with weak-links of exotic materials allow the elucidation of the Josephson effect in previously unexplored regimes. Further, such devices offer a direct probe o…
Subband occupation in semiconductor-superconductor nanowires
Benjamin D. Woods, Sankar Das Sarma, Tudor D. Stanescu
Subband occupancy (i.e. the number of occupied subbands or energy levels in the semiconductor) is a key physical parameter characterizing the topological properties of superconduct…
Collective ground states in small lattices of coupled quantum dots
DinhDuy Vu, Sankar Das Sarma
Motivated by recent developments on the fabrication and control of semiconductor-based quantum dot qubits, we theoretically study a finite system of tunnel-coupled quantum dots wit…
Physical mechanisms for zero-bias conductance peaks in Majorana nanowires
Haining Pan, S. Das Sarma
Motivated by the need to understand and simulate the ubiquitous experimentally-observed zero-bias conductance peaks in superconductor-semiconductor hybrid structures, we theoretica…
Electron-phonon and electron-electron interaction effects in twisted bilayer graphene
Sankar Das Sarma, Fengcheng Wu
By comparing with recently available experimental data from several groups, we critically discuss the manifestation of continuum many body interaction effects in twisted bilayer gr…
Non-equilibrium nature of non-linear optical response: Application to the bulk photo voltaic effect
Tamoghna Barik, Jay D. Sau
The bulk photovoltaic effect is an example of a non-linear optical response that leads to a DC current that is relevant for photo-voltaic applications. In this work, we theoretical…
Higher-Order Topological Dirac Superconductors
Rui-Xing Zhang, Yi-Ting Hsu, S. Das Sarma
We introduce higher-order topological Dirac superconductor (HOTDSC) as a new gapless topological phase of matter in three dimensions, which extends the notion of Dirac phase to a h…
Three-Dimensional Topological Twistronics
Fengcheng Wu, Rui-Xing Zhang, Sankar Das Sarma
We introduce a theoretical framework for the new concept of three-dimensional (3D) twistronics by developing a generalized Bloch band theory for 3D layered systems with a constant…
Ferromagnetism in Quantum Dot Plaquettes
Donovan Buterakos, Sankar Das Sarma
Following the recent claimed obsevation of Nagaoka ferromagnetism in finite size quantum dot plaquettes, a general theoretical analysis is warranted in order to ascertain in rather…
Electron Induced Massive Dynamics of Magnetic Domain Walls
Hilary M. Hurst, Victor Galitski, Tero T. Heikkilä
We study the dynamics of domain walls (DWs) in a metallic, ferromagnetic nanowire. We develop a Keldysh collective coordinate technique to describe the effect of conduction electro…
Collective Excitations of Quantum Anomalous Hall Ferromagnets in Twisted Bilayer Graphene
Fengcheng Wu, Sankar Das Sarma
We present a microscopic theory for collective excitations of quantum anomalous Hall ferromagnets (QAHF) in twisted bilayer graphene. We calculate the spin magnon and valley magnon…
Ferromagnetism and its stability from the one-magnon spectrum in twisted bilayer graphene
Yahya Alavirad, Jay D. Sau
We study ferromagnetism and its stability in twisted bilayer graphene. We work with a Hubbard-like interaction that corresponds to the screened Coulomb interaction in a well-define…
Symmetry-breaking signatures of multiple Majorana zero modes in one-dimensional spin-triplet superconductors
Arnab Barman Ray, Jay D. Sau, Ipsita Mandal
We study the effects of various symmetry-breaking perturbations on the experimentally measurable signatures (such as conductance and Josephson response) of quasi-one-dimensional (q…
Impurity scattering induced carrier transport in twisted bilayer graphene
E. H. Hwang, S. Das Sarma
We theoretically calculate the impurity-scattering induced resistivity of twisted bilayer graphene at low twist angles where the graphene Fermi velocity is strongly suppressed. We…
Generic quantized zero-bias conductance peaks in superconductor-semiconductor hybrid structures
Haining Pan, William S. Cole, Jay D. Sau +1
We show theoretically that quantized zero-bias conductance peaks should be ubiquitous in superconductor-semiconductor hybrids by employing a zero-dimensional random matrix model wi…
Probing and dressing magnetic impurities in a superconductor
Kamphol Akkaravarawong, Jukka I. Väyrynen, Jay D. Sau +3
We propose a method to probe and control the interactions between an ensemble of magnetic impurities in a superconductor via microwave radiation. Our method relies upon the presenc…
Equilibration of Quasi-One-Dimensional Fermi Gases
Wade DeGottardi, K. A. Matveev
One-dimensional systems often possess multiple channels or bands arising from the excitation of transverse degrees of freedom. In the present work, we study the specific processes…
A fiber-integrated single photon source emitting at telecom wavelengths
Chang-Min Lee, Mustafa Atabey Buyukkaya, Shahriar Aghaeimeibodi +2
Fiber-coupled single photon sources are essential components of photonics-based quantum information processors. Most fiber-coupled single photon sources require careful alignment b…
Electronic structure of full-shell InAs/Al hybrid semiconductor-superconductor nanowires: Spin-orbit coupling and topological phase space
Benjamin D. Woods, Sankar Das Sarma, Tudor D. Stanescu
We study the electronic structure of full-shell superconductor-semiconductor nanowires, which have recently been proposed for creating Majorana zero modes, using an eight-band $\ve…