42 citations · 106 across the 11 of their papers we have counts for
11 papers
Imaging geometry- and phase-controlled spectra in a surface-state Andreev cavity
Adrian Greichgauer, Yoichi Ando, Jens Brede
Andreev cavities provide a setting in which superconducting proximity spectra are shaped by phase-coherent electron-hole motion along extended trajectories. While such Andreev phys…
Dynamics of current-induced switching in the quantum anomalous Hall effect
Alina Rupp, Daniel Rosenbach, Torsten Röper +4
Ferromagnetic topological insulators in the quantum anomalous Hall (QAH) regime host chiral, dissipationless edge states whose propagation direction is determined by the internal m…
Ex Situ Fabrication of Superconducting Nanostructures for Low-Temperature STM
Adrian Greichgauer, Roozbeh Yazdanpanah, Alexey Taskin +3
Nanofabrication of topological insulator (TI) devices is essential for accessing edge and interface states, but conventional lithography and etching compromise the atomically clean…
Breakdown of the quantum anomalous Hall effect under microwave drives
Torsten Röper, Daniel Rosenbach, Achim Rosch +3
Quantum anomalous Hall (QAH) insulators exhibit chiral dissipationless edge states without an external magnetic field, making them a promising material for quantum metrology and mi…
Non-Majorana-origin of the half-integer conductance quantization elucidated by multi-terminal superconductor-quantum anomalous Hall insulator heterostructure
Anjana Uday, Gertjan Lippertz, Bibek Bhujel +2
Chiral one-dimensional transport can be realized in thin films of a surface-insulating ferromagnetic topological insulator called quantum anomalous Hall insulator (QAHI). When supe…
Characterizing the chemical potential disorder in the topological insulator (BiSb)Te thin films
Jens Brede, Mahasweta Bagchi, Adrian Greichgauer +6
We use scanning tunneling microscopy and spectroscopy under ultra-high vacuum and down to 1.7 K to study the local variations of the chemical potential on the surface of the topolo…
Propagation, dissipation and breakdown in quantum anomalous Hall edge states probed by microwave edge plasmons
Torsten Röper, Hugo Thomas, Daniel Rosenbach +7
The quantum anomalous Hall (QAH) effect, with its single chiral, topologically protected edge state, offers a platform for flying Majorana states as well as non-reciprocal microwav…
Selective-Area Epitaxy of Bulk-Insulating (BiSb)Te Films and Nanowires by Molecular Beam Epitaxy
Gertjan Lippertz, Oliver Breunig, Rafael Fister +5
The selective-area epitaxy (SAE) is a useful technique to grow epitaxial films with a desired shape on a pre-patterned substrate. Although SAE of patterned topological-insulator (T…
Induced superconducting correlations in the quantum anomalous Hall insulator
Anjana Uday, Gertjan Lippertz, Kristof Moors +5
Inducing Cooper pairing in a thin ferromagnetic topological insulator in the quantum anomalous Hall state (called quantum anomalous Hall insulator, QAHI) is a promising way to real…
Uniaxial-strain Control of Nematic Superconductivity in SrBiSe
Ivan Kostylev, Shingo Yonezawa, Zhiwei Wang +2
Nematic states are characterized by rotational symmetry breaking without translational ordering. Recently, nematic superconductivity, in which the superconducting gap spontaneously…
Spin-singlet superconductivity in doped topological crystalline insulator Sn_{0.96}In_{0.04}Te
S. Maeda, R. Hirose, K. Matano +3
The In-doped topological crystalline insulator Sn_{1-x}In_xTe is a candidate for a topological superconductor, where pseudo-spin-triplet state has been proposed. To clarify the spi…