Flux-periodic resistance oscillations in arrays of superconducting weak links based on InAs-AlSb quantum wells with Nb electrodes

Autor:	Evelyn L. Hu, K. C. Wong, M. Thomas, H.-R. Blank, Chanh Nguyen, Herbert Kroemer
Rok vydání:	1996
Předmět:	Physics Superconductivity Condensed matter physics Electrical resistivity and conductivity Oscillation Superlattice Magnetic flux quantum Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Magnetic flux Quantum well Magnetic field
Zdroj:	Physical Review B. 54:R2311-R2314
ISSN:	1095-3795 0163-1829
Popis:	InAs-AlSb quantum wells contacted with periodic gratings of superconducting Nb electrodes show Josephson-junction characteristics at low temperatures. When a nonzero resistance is reestablished by a weak magnetic field, the resistance shows a strong component periodic in the magnetic field. At fields above \ensuremath{\sim}300 \ensuremath{\mu}T, the oscillation period corresponds to one flux quantum per grating cell; but in wide arrays (\ensuremath{\gtrsim}40 \ensuremath{\mu}m), a frequency doubling takes place at low fields, indicating the formation of a staggered vortex superlattice at twice the lithographic period.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b4abf3e05ab40cbb143ec8d1a43e296 https://doi.org/10.1103/physrevb.54.r2311 Zobrazit plný text záznamu