317 citations · 1.5k across the 18 of their papers we have counts for
18 papers
Pumping conductance, the intrinsic anomalous Hall effect, and statistics of topological invariants
Jan Dahlhaus, Roni Ilan, Daniel Freed +2
The pumping conductance of a disordered two-dimensional Chern insulator scales with increasing size and fixed disorder strength to sharp plateau transitions at well-defined energie…
Magnetization signatures of light-induced quantum Hall edge states
Jan P. Dahlhaus, Benjamin M. Fregoso, Joel E. Moore
Circularly polarised light opens a gap in the Dirac spectrum of graphene and topological insulator (TI) surfaces, thereby inducing a quantum Hall-like phase. We propose to detect t…
Dynamics of tunneling into nonequilibrium edge states
Benjamin M. Fregoso, Jan P. Dahlhaus, Joel E. Moore
Time-dependent perturbations can drive a trivial two-dimensional band insulator into a quantum Hall-like phase, with protected nonequilibrium states bound to its edges. We propose…
Universal nonequilibrium signatures of Majorana zero modes in quench dynamics
R. Vasseur, J. P. Dahlhaus, J. E. Moore
The quantum evolution after a metallic lead is suddenly connected to an electron system contains information about the excitation spectrum of the combined system. We exploit this t…
Scattering theory of topological phases in discrete-time quantum walks
B. Tarasinski, J. K. Asboth, J. P. Dahlhaus
One-dimensional discrete-time quantum walks show a rich spectrum of topological phases that have so far been exclusively analysed in momentum space. In this work we introduce an al…
Wigner-Poisson statistics of topological transitions in a Josephson junction
C. W. J. Beenakker, J. M. Edge, J. P. Dahlhaus +3
The phase-dependent bound states (Andreev levels) of a Josephson junction can cross at the Fermi level, if the superconducting ground state switches between even and odd fermion pa…
Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect
C. W. J. Beenakker, D. I. Pikulin, T. Hyart +2
The helical edge state of a quantum spin-Hall insulator can carry a supercurrent in equilibrium between two superconducting electrodes (separation L, coherence length xi). We calcu…
Scattering theory of topological invariants in nodal superconductors
J. P. Dahlhaus, M. Gibertini, C. W. J. Beenakker
Time-reversal invariant superconductors having nodes of vanishing excitation gap support zero-energy boundary states with topological protection. Existing expressions for the topol…
Zero-voltage conductance peak from weak antilocalization in a Majorana nanowire
D. I. Pikulin, J. P. Dahlhaus, M. Wimmer +2
We show that weak antilocalization by disorder competes with resonant Andreev reflection from a Majorana zero-mode to produce a zero-voltage conductance peak of order e^2/h in a su…
Andreev reflection from a topological superconductor with chiral symmetry
M. Diez, J. P. Dahlhaus, M. Wimmer +1
It was pointed out by Tewari and Sau that chiral symmetry (H -> -H if e <-> h) of the Hamiltonian of electron-hole (e-h) excitations in an N-mode superconducting wire is associated…
Metal--topological-insulator transition in the quantum kicked rotator with Z2 symmetry
E. P. L. van Nieuwenburg, J. M. Edge, J. P. Dahlhaus +2
The quantum kicked rotator is a periodically driven dynamical system with a metal-insulator transition. We extend the model so that it includes phase transitions between a metal an…
Quantum Hall effect in a one-dimensional dynamical system
J. P. Dahlhaus, J. M. Edge, J. Tworzydlo +1
We construct a periodically time-dependent Hamiltonian with a phase transition in the quantum Hall universality class. One spatial dimension can be eliminated by introducing a seco…
Quantum point contact as a probe of a topological superconductor
M. Wimmer, A. R. Akhmerov, J. P. Dahlhaus +1
We calculate the conductance of a ballistic point contact to a superconducting wire, produced by the s-wave proximity effect in a semiconductor with spin-orbit coupling in a parall…
Random-matrix theory of Andreev reflection from a topological superconductor
C. W. J. Beenakker, J. P. Dahlhaus, M. Wimmer +1
We calculate the probability distribution of the Andreev reflection eigenvalues R_n at the Fermi level in the circular ensemble of random-matrix theory. Without spin-rotation symme…
Quantized conductance at the Majorana phase transition in a disordered superconducting wire
A. R. Akhmerov, J. P. Dahlhaus, F. Hassler +2
Superconducting wires without time-reversal and spin-rotation symmetries can be driven into a topological phase that supports Majorana bound states. Direct detection of these zero-…
Geodesic scattering by surface deformations of a topological insulator
J. P. Dahlhaus, C. -Y. Hou, A. R. Akhmerov +1
We consider the classical ballistic dynamics of massless electrons on the conducting surface of a three-dimensional topological insulator, influenced by random variations of the su…
Random-matrix theory of thermal conduction in superconducting quantum dots
J. P. Dahlhaus, B. Béri, C. W. J. Beenakker
We calculate the probability distribution of the transmission eigenvalues T_n of Bogoliubov quasiparticles at the Fermi level in an ensemble of chaotic Andreev quantum dots. The fo…
Spin current generation and detection by a double quantum dot structure
J. P. Dahlhaus, S. Maier, A. Komnik
We propose a device acting as a spin valve which is based on a double quantum dot structure with parallel topology. Using the exact analytical solution for the noninteracting case…