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Exotic circuit elements from zero-modes in hybrid superconductor/quantum Hall systems
- Source :
- Nature Physics 10, 877-882 (2014)
- Publication Year :
- 2013
-
Abstract
- Heterostructures formed by quantum Hall systems and superconductors have recently been shown to support widely coveted Majorana fermion zero-modes and still more exotic `parafermionic' generalizations. Here we establish that probing such zero-modes using quantum Hall edge states yields non-local transport signatures that pave the way towards a variety of novel circuit elements. In particular, we demonstrate quite generally that at low energies the zero-modes convert chirally moving quasiparticles into oppositely charged quasiholes propagating in the same direction---that is, they swap the sign of the chiral edge currents. One may then construct new and potentially useful circuit elements using this `perfect Andreev conversion' process, including superconducting current and voltage mirrors as well as transistors for fractional charge currents. Characterization of these circuit elements should provide striking evidence of the zero-mode physics.<br />Comment: 7 pages, 5 figures, v2: references added
Details
- Database :
- arXiv
- Journal :
- Nature Physics 10, 877-882 (2014)
- Publication Type :
- Report
- Accession number :
- edsarx.1312.6123
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1038/nphys3114