312 citations · 5.8k across the 176 of their papers we have counts for
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Dirac Landau levels for surfaces with constant negative curvature
Maximilian Fürst, Denis Kochan, Ioachim-Gheorghe Dusa +2
Studies of the formation of Landau levels based on the Schrödinger equation for electrons constrained to curved surfaces have a long history. These include as prime examples surfac…
Supercurrent interference in HgTe Josephson junctions
Wolfgang Himmler, Ralf Fischer, Michael Barth +8
Wires made of topological insulators (TI) are a promising platform for searching for Majorana bound states. These states can be probed by analyzing the fractional ac Josephson effe…
Quantum capacitive coupling between large-angle twisted graphene layers
Alina Mrenca-Kolasinska, Peter Rickhaus, Giulia Zheng +4
Large-angle twisted bilayer graphene (tBLG) is known to be electronically decoupled due to the spatial separation of the Dirac cones corresponding to individual graphene layers in…
Dirac fermion optics and directed emission from single- and bilayer graphene cavities
Jule-Katharina Schrepfer, Szu-Chao Chen, Ming-Hao Liu +2
High-mobility graphene hosting massless charge carriers with linear dispersion provides a promising platform for electron optics phenomena. Inspired by the physics of dielectric op…
Dynamical Spin-Orbit-Based Spin Transistor
F. N. Gürsoy, P. Reck, C. Gorini +2
Spin-orbit interaction (SOI) has been a key tool to steer and manipulate spin-dependent transport properties in two-dimensional electron gases. Here we demonstrate how spin current…
Crossed Andreev reflection in topological insulator nanowire T-junctions
Jacob Fuchs, Michael Barth, Cosimo Gorini +2
We numerically study crossed Andreev reflection (CAR) in a topological insulator nanowire T-junction where one lead is proximitized by a superconductor. We perform realistic simula…
Anomalous Cyclotron Motion in Graphene Superlattice Cavities
R. Kraft, M. -H. Liu, P. B. Selvasundaram +4
We consider graphene superlattice miniband fermions probed by electronic interferometry in magneto-transport experiments. By decoding the observed Fabry-Pérot interference patterns…
Theory of magnetotransport in shaped topological insulator nanowires
Ansgar Graf, Raphael Kozlovsky, Klaus Richter +1
We show that shaped topological insulator (TI) nanowires, i.e. such that their cross-section radius varies along the wire length, can be tuned into a number of different transport…
Gate-tunable two-dimensional superlattices in graphene
Robin Huber, Ming-Hao Liu, Szu-Chao Chen +7
We report an efficient technique to induce gate-tunable two-dimensional superlattices in graphene by the combined action of a back gate and a few-layer graphene patterned bottom ga…
Gate-controlled Spin Extraction from Topological Insulator Surfaces
Ali Asgharpour, Cosimo Gorini, Sven Essert +2
Spin-momentum locking, a key property of the surface states of three-dimensional topological insulators (3DTIs), provides a new avenue for spintronics applications. One consequence…
2D-Dirac surface states and bulk gap probed via quantum capacitance in a 3D topological insulator
Jimin Wang, Cosimo Gorini, Klaus Richter +3
BiSbTeSe is a 3D topological insulator (3D-TI) with Dirac type surface states and low bulk carrier density, as donors and acceptors compensate each other. Dominating low temper…
Steering Zitterbewegung in driven Dirac systems -- from persistent modes to echoes
Phillipp Reck, Cosimo Gorini, Klaus Richter
Although zitterbewegung -- the jittery motion of relativistic particles -- is known since 1930 and was predicted in solid state systems long ago, it has been directly measured so f…
Magnetoconductance, Quantum Hall Effect, and Coulomb Blockade in Topological Insulator Nanocones
Raphael Kozlovsky, Ansgar Graf, Denis Kochan +2
Magnetotransport through cylindrical topological insulator (TI) nanowires is governed by the interplay between quantum confinement and geometric (Aharonov-Bohm and Berry) phases. H…
Electrostatic Superlattices on Scaled Graphene Lattices
Szu-Chao Chen, Rainer Kraft, Romain Danneau +2
A scalable tight-binding model is applied for large-scale quantum transport calculations in clean graphene subject to electrostatic superlattice potentials, including two types of…
The Electronic Thickness of Graphene
Peter Rickhaus, Ming-Hao Liu, Marcin Kurpas +10
The van-der-Waals stacking technique enables the fabrication of heterostructures, where two conducting layers are atomically close. In this case, the finite layer thickness matters…
Floquet oscillations in periodically driven Dirac systems
Vanessa Junk, Phillipp Reck, Cosimo Gorini +1
Electrons in a lattice exhibit time-periodic motion, known as Bloch oscillation, when subject to an additional static electric field. Here we show that a corresponding dynamics can…
Quantum time mirrors for general two-band systems
Phillipp Reck, Cosimo Gorini, Klaus Richter
Methods that are devised to achieve reversal of quantum dynamics in time have been named "quatum time mirrors". Such a time mirror can be considered as a generalization of Hahn's s…
Co-existence of classical snake states and Aharanov-Bohm oscillations along graphene p-n junctions
Peter Makk, Clevin Handschin, Endre Tovari +5
Snake states and Aharonov-Bohm interferences are examples of magnetoconductance oscillations that can be observed in a graphene p-n junction. Even though they have already been rep…
Commensurability Oscillations in One-Dimensional Graphene Superlattices
Martin Drienovsky, Jonas Joachimsmeyer, Andreas Sandner +6
We report the experimental observation of commensurability oscillations (COs) in 1D graphene superlattices. The widely tunable periodic potential modulation in hBN encapsulated gra…
Giant valley-isospin conductance oscillations in ballistic graphene
Clevin Handschin, Péter Makk, Peter Rickhaus +6
At high magnetic fields the conductance of graphene is governed by the half-integer quantum Hall effect. By local electrostatic gating a \textit{p-n} junction perpendicular to the…
Probing Spin Helical Surface States in Topological HgTe Nanowires
Johannes Ziegler, Raphael Kozlovsky, Cosimo Gorini +10
Nanowires with helical surface states represent key prerequisites for observing and exploiting phase-coherent topological conductance phenomena, such as spin-momentum locked quantu…
Few-layer graphene patterned bottom gates for van der Waals heterostructures
Martin Drienovsky, Andreas Sandner, Christian Baumgartner +6
We introduce a method of local gating for van der Waals heterostructures, employing a few-layer graphene patterned bottom gate. Being a member of the 2D material family, few-layer…
Tuning anti-Klein to Klein tunneling in bilayer graphene
Renjun Du, Ming-Hao Liu, Jens Mohrmann +5
We show that in gapped bilayer graphene, quasiparticle tunneling and the corresponding Berry phase can be controlled such that it exhibits features of single layer graphene such as…
Fabry-Pérot resonances in a graphene/hBN Moiré superlattice
Clevin Handschin, Péter Makk, Peter Rickhaus +5
While Fabry-Pérot resonances and Moiré superlattices are intensively studied in graphene on hexagonal boron nitride (hBN), the two effects have not been discussed in their coexiste…