Directional electron filtering at a superconductor-semiconductor interface
Daniel Breunig, Song-Bo Zhang, Björn Trauzettel, T. M. Klapwijk
DOI 10.1103/PhysRevB.103.165414 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We evaluate the microscopically relevant parameters for electrical transport of hybrid superconductor-semiconductor interfaces. In contrast to the commonly used geometrically constricted metallic systems, we focus on materials with dissimilar electronic properties like low-carrier density semiconductors combined with superconductors, without imposing geometric confinement. We find an intrinsic mode-selectivity, a directional momentum-filter, due to the differences in electronic band structure, which creates a separation of electron reservoirs each at the opposite sides of the semiconductor, while at the same time selecting modes propagating almost perpendicular to the interface. The electronic separation coexists with a transport current dominated by Andreev reflection and low elastic backscattering, both dependent on the gate-controllable electronic properties of the semiconductor.
Similar papers
Spin-polarized transport and Andreev reflection in semiconductor/superconductor hybrid structures
similarity 0.93Igor Žutić & S. Das Sarma
Source status unknown — claims are unverified
Andreev magnetotransport in low-dimensional proximity structures: Spin-dependent conductance enhancement
similarity 0.90Grygoriy Tkachov & Klaus Richter
Source status unknown — claims are unverified
Directional electron-filtering at a superconductor-semiconductor interface
similarity 0.90Daniel Breunig et al. · 2020 · arXiv:2012.05592
Source status unknown — claims are unverified
Andreev reflection and cyclotron motion at superconductor—normal-metal interfaces
similarity 0.90F. Giazotto et al.
Source status unknown — claims are unverified
Nonlocal conductance via overlapping Andreev bound states in ferromagnet-superconductor heterostructures
similarity 0.89Georgo Metalidis et al.
Source status unknown — claims are unverified
Interfering trajectories in a ballistic Andreev cavity
similarity 0.89Pankaj Mandal et al.
Source status unknown — claims are unverified