117 citations · 361 across the 15 of their papers we have counts for
15 papers
Unconventional incommensurate epitaxy of superconducting FeSe films on SrTiO
M. Klement, K. M. Fijalkowski, M. Kamp +2
We present a combined X-ray diffraction and transmission electron microscopy study of superconducting FeSe/FeTe multilayers grown by molecular beam epitaxy on SrTiO(001) substr…
Interfering trajectories in a ballistic Andreev cavity
Pankaj Mandal, Marcel Kaschper, Fernando Dominguez +9
The conventional description of transport through the interface between a normal conductor and a superconductor reduces the system to a one-dimensional problem treating Andreev ref…
Self-Consistent Model for Gate Control of Narrow-, Broken-, and Inverted-Gap (Topological) Heterostructures
Maximilian Hofer, Christopher Fuchs, Moritz Siebert +8
Even small electrostatic potentials can dramatically influence the band structure of narrow-, broken-, and inverted-gap materials. A quantitative understanding often necessitates a…
Wiedemann-Franz behavior at the Weyl points in compressively strained HgTe
Abu Alex Aravindnath, Yi-Ju Ho, Fabian Schmitt +6
Weyl semimetals, with their unique electronic band structure, have drawn significant interest for their potential to explore quantum anomalies in condensed matter systems. In this…
Femtosecond photocurrents by the Dresselhaus bulk spin-galvanic effect in an inversion-asymmetric ferromagnet
Junwei Tong, Zdenek Kaspar, Afnan Alostaz +18
We study ultrafast photocurrents in thin films of a model ferromagnetic metal with broken bulk inversion symmetry, the half-metallic Heusler compound NiMnSb, following excitation w…
Phase-dependent supercurrent and microwave dissipation of HgTe quantum well Josephson junctions
Wei Liu, Stanislau U. Piatrusha, Lena Fürst +4
We measured the microwave response of a HgTe quantum well Josephson junction embedded into an RF SQUID loop which is inductively coupled to a superconducting resonator. The side-co…
Highly efficient broadband THz upconversion with Dirac materials
Tatiana A. Uaman Svetikova, Igor Ilyakov, Alexey Ponomaryov +16
The use of the THz frequency domain in future network generations offers an unparalleled level of capacity, which can enhance innovative applications in wireless communication, ana…
Zero external magnetic field quantum standard of resistance at the 10-9 level
D. K. Patel, K. M. Fijalkowski, M. Kruskopf +10
The quantum anomalous Hall effect holds promise as a disruptive innovation in condensed matter physics and metrology, as it gives access to Hall resistance quantization in terms of…
Period-doubling in the phase dynamics of a shunted HgTe quantum well Josephson junction
Wei Liu, Stanislau U. Piatrusha, Xianhu Liang +7
The fractional AC Josephson effect is a discerning property of topological superconductivity in hybrid Josephson junctions. Recent experimental observations of missing odd Shapiro…
Epitaxy and Structural Properties of (V,Bi,Sb)Te Layers Exhibiting the Quantum Anomalous Hall Effect
M. Winnerlein, S. Schreyeck, S. Grauer +5
The influence of Sb content, substrate type and cap layers on the quantum anomalous Hall effect observed in V-doped (Bi,Sb)Te magnetic topological insulators is investigate…
Interplay of chiral and helical states in a Quantum Spin Hall Insulator lateral junction
M. R. Calvo, F. de Juan, R. Ilan +11
We study the electronic transport across an electrostatically-gated lateral junction in a HgTe quantum well, a canonical 2D topological insulator, with and without applied magnetic…
Phase-sensitive SQUIDs based on the 3D topological insulator HgTe
Luis Maier, Erwann Bocquillon, Manuel Grimm +6
Three-dimensional topological insulators represent a new class of materials in which transport is governed by Dirac surface states while the bulk remains insulating. Due to helical…
Room-temperature spin-orbit torque in NiMnSb
C. Ciccarelli, L. Anderson, V. Tshitoyan +11
Materials that crystalize in diamond-related lattices, with Si and GaAs as their prime examples, are at the foundation of modern electronics. Simultaneoulsy, the two atomic sites i…
Coincidence of Superparamagnetism and perfect quantization in the Quantum Anomalous Hall state
S. Grauer, S. Schreyeck, M. Winnerlein +3
Topological insulators doped with transition metals have recently been found to host a strong ferromagnetic state with perpendicular to plane anisotropy as well as support a quantu…
Circular photogalvanic effect in HgTe/CdHgTe quantum well structures
B. Wittmann, S. N. Danilov, V. V. Bel'kov +12
We describe the observation of the circular and linear photogalvanic effects in HgTe/CdHgTe quantum wells. The interband absorption of mid-infrared radiation as well as the intrasu…