OBSERVATION OF MAXIMUM SUPERCURRENT QUANTIZATION IN A SUPERCONDUCTINGQUANTUM POINT-CONTACT

Authors
TAKAYANAGI H AKAZAKI T NITTA J
Citation
H. Takayanagi et al., OBSERVATION OF MAXIMUM SUPERCURRENT QUANTIZATION IN A SUPERCONDUCTINGQUANTUM POINT-CONTACT, Physical review letters, 75(19), 1995, pp. 3533-3536
Citations number
21
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
75
Issue
19
Year of publication
1995
Pages
3533 - 3536
Database
ISI
SICI code
0031-9007(1995)75:19<3533:OOMSQI>2.0.ZU;2-G
Abstract
We have confirmed the quantization of the critical current in a superc onducting quantum point contact consisting of a split-gate superconduc tor-(two-dimensional electron gas)-superconductor junction. The critic al current and conductance show stepwise changes as a function of the gate voltage. We also observed resonant structure resulting from quant um interference of quasiparticles at the step edge.