Dissipation in an ultrathin superconducting single-crystal Pb nanobridge

Journal Article · Sat Aug 01 00:00:00 EDT 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3187908· OSTI ID:21359362

Jian, Wang ^[1]; Xucun, Ma; Yun, Qi; Shuaihua, Ji; Yingshuang, Fu; Li, Lu; Aizi, Jin; Changzhi, Gu ^[1]; Xie, X C ^[1]; Mingliang, Tian ^[2]; Jinfeng, Jia; Qikun, Xue ^[1]

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1. Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
2. Department of Physics and the Center for Nanoscale Science, Pennsylvania State University, University Park, Pennsylvania 16802-6300 (United States)

The transport property of a superconducting Pb nanobridge, which is carved by focus ion beam technique from an atomically flat single-crystal Pb thin film grown on Si(111) substrate, is investigated. Below the superconducting transition temperature T{sub C}, the nanobridge exhibits a series of sharp voltage steps as a function of current. The multiple voltage steps are interpreted as a consequence of spatially localized phase slip centers or hot-spot formation in the bridge. Just below the critical current, the voltages versus current curve shows a power-law behavior in the low temperature region, but Ohmic near the T{sub C}. The thermally activated phase slip, quantum phase slip, and imhomogeneity in a one-dimensional superconducting system may contribute to the observed results.

• OSTI ID: 21359362
• Journal Information: Journal of Applied Physics, Vol. 106, Issue 3; Other Information: DOI: 10.1063/1.3187908; (c) 2009 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CRITICAL CURRENT
CRYSTAL GROWTH
ELECTRIC POTENTIAL
HOT SPOTS
ION BEAMS
MOLECULAR BEAM EPITAXY
MONOCRYSTALS
NANOSTRUCTURES
ONE-DIMENSIONAL CALCULATIONS
SILICON
THIN FILMS
TRANSITION TEMPERATURE
TYPE-I SUPERCONDUCTORS
BEAMS
CRYSTAL GROWTH METHODS
CRYSTALS
CURRENTS
ELECTRIC CURRENTS
ELEMENTS
EPITAXY
FILMS
PHYSICAL PROPERTIES
SEMIMETALS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES