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Effect of Inversion Asymmetry on Bilayer Graphene's Superconducting and Exciton Condensates
Xiang Hu, Enrico Rossi, Yafis Barlas
Inversion asymmetry in bilayer graphene can be tuned by the displacement field. As a result, the band dispersion in biased bilayer graphene acquires flat band regions near the Dira…
Kondo Effect in Defect-bound Quantum Dots Coupled to NbSe
T. R. Devidas, Tom Dvir, Enrico Rossi +1
We report the fabrication of a van der Waals tunneling device hosting a defect-bound quantum dot coupled to NbSe. We find that upon application of magnetic field, the device ex…
Induced superconducting pairing in integer quantum Hall edge states
Mehdi Hatefipour, Joseph J. Cuozzo, Jesse Kanter +5
Indium Arsenide (InAs) near surface quantum wells (QWs) are promising for the fabrication of semiconductor-superconductor heterostructures given that they allow for a strong hybrid…
Quantum-metric-enabled exciton condensate in double twisted bilayer graphene
Xiang Hu, Timo Hyart, Dmitry I. Pikulin +1
Flat-band systems are a promising platform for realizing exotic collective ground states with spontaneously broken symmetry because the electron-electron interactions dominate over…
Missing Shapiro steps in topologically trivial Josephson Junction on InAs quantum well
Matthieu C. Dartiailh, Joseph J. Cuozzo, William Mayer +4
Josephson junctions hosting Majorana fermions have been predicted to exhibit a 4 periodic current phase relation. The experimental consequence of this periodicity is the disappe…
Proximity induced spin-orbit splitting in graphene nanoribbons on transition metal dichalcogenides
Yohanes S. Gani, Eric J. Walter, Enrico Rossi
We study the electronic structure of heterostructures formed by a graphene nanoribbon (GNR) and a transition metal dichalcogenides (TMD) monolayer using first-principles. We consid…
Van der Waals heterostructures with spin-orbit coupling
Enrico Rossi, Christopher Triola
In this article we review recent work on van der Waals (vdW) systems in which at least one of the components has strong spin-orbit coupling. We focus on a selection of vdW heterost…
Gate Controlled Anomalous Phase Shift in Al/InAs Josephson Junctions
William Mayer, Matthieu C. Dartiailh, Joseph Yuan +3
In a standard Josephson junction the current is zero when the phase difference between the superconducting leads is zero. This condition is protected by parity and time-reversal sy…
Spin-charge coupled transport in van der Waals systems with random tunneling
M. Rodriguez-Vega, G. Schwiete, Enrico Rossi
We study the electron and spin transport in a van der Waals system formed by one layer with strong spin-orbit coupling and a second layer without spin-orbit coupling, in the regime…
Superconductivity in twisted Graphene heterostructures
Yohanes S. Gani, Hadar Steinberg, Enrico Rossi
We study the low-energy electronic structure of heterostructures formed by one sheet of graphene placed on a monolayer of . We build a continuous low-energy effective…
Second-order Dirac superconductors and magnetic field induced Majorana hinge modes
Sayed Ali Akbar Ghorashi, Xiang Hu, Taylor L. Hughes +1
We identify three-dimensional higher-order superconductors characterized by the coexistence of one-dimensional Majorana hinge states and gapless surface sates. We show how such sup…
Electronic structure of graphene-nanoribbons on hexagonal boron nitride
Yohanes S. Gani, D. S. L. Abergel, Enrico Rossi
Hexagonal boron nitride is an ideal dielectric to form two-dimensional heterostructures due to the fact that it can be exfoliated to be just few atoms thick and its a very low dens…
Effects of gate-induced electric fields on semiconductor Majorana nanowires
Andrey E. Antipov, Arno Bargerbos, Georg W. Winkler +3
We study the effect of gate-induced electric fields on the properties of semiconductor-superconductor hybrid nanowires which represent a promising platform for realizing topologica…
Impurity-induced states in superconducting heterostructures
Dong E. Liu, Enrico Rossi, Roman M. Lutchyn
Heterostructures allow the realization of electronic states that are difficult to obtain in isolated systems. Exemplary is the case of quasi-one-dimensional heterostructures formed…
Giant Edelstein effect in Topological-Insulator--Graphene heterostructures
M. Rodriguez-Vega, G. Schwiete, J. Sinova +1
The control of a ferromagnet's magnetization via only electric currents requires the efficient generation of current-driven spin-torques. In magnetic structures based on topologica…
Local and Global Screening Properties of Graphene Revealed through Landau Level Spectroscopy
Chih-Pin Lu, Martin Rodriguez-Vega, Guohong Li +5
One-atom thick crystalline layers and their vertical heterostructures carry the promise of designer electronic materials that are unattainable by standard growth techniques. In ord…
Kondo effect and non-Fermi liquid behavior in Dirac and Weyl semimetals
Alessandro Principi, Giovanni Vignale, Enrico Rossi
We study the Kondo effect in three-dimensional (3D) Dirac materials and Weyl semimetals. We find the scaling of the Kondo temperature with respect to the doping and the couplin…
Ground state of graphene heterostructures in the presence of random charged impurities
Martin Rodriguez-Vega, Jonathan Fischer, S. Das Sarma +1
We study the effect of long-range disorder created by charge impurities on the carrier density distribution of graphene-based heterostructures. We consider heterostructures formed…
Interlayer excitonic superfluidity in graphene
D. S. L. Abergel, M. Rodriguez-Vega, Enrico Rossi +1
We discuss the conditions under which the predicted (but not yet observed) zero-field interlayer excitonic condensation in double layer graphene has a critical temperature high eno…
Two-dimensional electronic transport on the surface of 3D topological insulators
Qiuzi Li, E. Rossi, S. Das Sarma
We present a theoretical approach to describe the 2D transport properties of the surfaces of three dimensional topological insulators (3DTIs) including disorder and phonon scatteri…
Screening and collective modes in gapped bilayer graphene
C. Triola, E. Rossi
We study the static and dynamic screening of gapped bilayer graphene. Unlike previous works we use the 4-band model instead of the simplified 2-band model. We find that there are i…
Inhomogeneity and nonlinear screening in gapped bilayer graphene
D. S. L. Abergel, E. Rossi, S. Das Sarma
We demonstrate that for gapped bilayer graphene, the nonlinear nature of the screening of an external disorder potential and the resulting inhomogeneity of the electron liquid are…
Effect of charged impurity correlation on transport in monolayer and bilayer graphene
Qiuzi Li, E. H. Hwang, E. Rossi
We study both monolayer and bilayer graphene transport properties taking into account the presence of correlations in the spatial distribution of charged impurities. In particular…
Electronic transport in two dimensional graphene
S. Das Sarma, Shaffique Adam, E. H. Hwang +1
We provide a broad review of fundamental electronic properties of two-dimensional graphene with the emphasis on density and temperature dependent carrier transport in doped or gate…