6 papers
Emergent spin quantum Hall edge states at the boundary of two-dimensional electron gas proximitized by an -wave superconductor
M. V. Parfenov, V. S. Khrapai, I. S. Burmistrov
Hybrid two-dimensional electron gas-superconductor (2DEG-S) structures in a quantized magnetic field offer a promising platform for realizing new topological phases. While recent e…
Thermal bottleneck in a freely suspended superconducting island on InAs nanowire
E. V. Shpagina, E. S. Tikhonov, D. Ruhstorfer +2
We investigate the heat balance in superconducting islands (S-islands) formed in epitaxial Al/InAs nanowires (NWs) freely suspended above the substrate. We employ a Joule spectrosc…
Superconducting bistability in floating Al islands of hybrid Al/InAs nanowires
E. V. Shpagina, E. S. Tikhonov, D. Ruhstorfer +2
We investigate a non-equilibrium aspect of the current-driven superconducting-normal phase transition in floating Al islands of epitaxial full-shell Al/InAs nanowires. Within a tra…
Conductance measurements cannot distinguish crossed Andreev reflection from elastic co-tunneling in normal--superconductor--normal junctions
E. S. Tikhonov, V. S. Khrapai
We argue that the interpretation of the experiment [Nature Physics 21, 708-715 (2025)] is misleading in two respects. First, the bias voltages impact the non-local differential con…
Natural width of the superconducting transition in epitaxial TiN films
E. M. Baeva, A. I. Kolbatova, N. A. Titova +7
We investigate the effect of various fluctuation mechanisms on the DC resistance in superconducting devices based on epitaxial titanium nitride (TiN) films. The samples we studied…
Slow electron-phonon relaxation controls the dynamics of the superconducting resistive transition
E. M. Baeva, A. I. Kolbatova, N. A. Titova +8
We investigate the temporal and spatial scales of resistance fluctuations (-fluctuations) at the superconducting resistive transition accessed through voltage fluctuations measu…