Spin-triplet supercurrent carried by quantum Hall edge states through a Josephson junction
Abstract
We show that a spin-polarized Landau level in a two-dimensional electron gas can carry a spin-triplet supercurrent between two spin-singlet superconductors. The supercurrent results from the interplay of Andreev reflection and Rashba spin-orbit coupling at the normal-superconductor (NS) interface. We contrast the current-phase relationship and the Fraunhofer oscillations of the spin-triplet and spin-singlet Josephson effect in the lowest Landau level and find qualitative differences.
- Publication:
-
Physical Review B
- Pub Date:
- May 2011
- DOI:
- 10.1103/PhysRevB.83.195441
- arXiv:
- arXiv:1103.0887
- Bibcode:
- 2011PhRvB..83s5441V
- Keywords:
-
- 73.23.-b;
- 73.43.-f;
- 74.45.+c;
- 74.78.Na;
- Electronic transport in mesoscopic systems;
- Quantum Hall effects;
- Proximity effects;
- Andreev effect;
- SN and SNS junctions;
- Mesoscopic and nanoscale systems;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 15 pages with 7 figures