Voltage fluctuations on a superconductor grain attached to a quantum wire

✍ Scribed by Masaki Oshikawa; Alexandre M. Zagoskin

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 124 KB
• Volume: 25
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1999.0736

✦ Synopsis

When a finite superconductor is in contact with a 1D normal conductor, superconducting phase fluctuations lead to power-law response of the normal subsystem. As a result, the charge fluctuations on the superconductor at zero temperature have logarithmic correlator and a 1/ω power spectrum (1/ f -noise). At higher temperatures 1/ω is pushed to the high frequency region, and 1/ω 2 behavior prevails.