Thumbnail
Access Restriction
Open

Author Kagawa, K. ♦ Inagaki, K. ♦ Tanda, S.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ SUPERCONDUCTING FILMS ♦ PHASE TRANSFORMATIONS ♦ COHERENCE LENGTH ♦ ELECTRIC CONDUCTIVITY ♦ LEAD ♦ SCALING ♦ SELF-CONSISTENT FIELD ♦ TEMPERATURE DEPENDENCE ♦ THIN FILMS ♦ LOCALIZED STATES ♦ METAL-INSULATOR TRANSFORMATIONS
Abstract We have measured temperature-dependent resistivities of a set of Pb ultrathin films by repeating {ital in} {ital situ} deposition at liquid-He temperature. Observed conductance in the fermion region can be described by a single-parameter scaling function ({beta} function) with a self-consistent theory for localization in two dimensions. Based on estimated values of electrical localization length ({xi}{sub loc}) and superconducting coherence length ({xi}{sub super}), the superconductor-insulator transition is confirmed to occur at the point where {xi}{sub loc}{approximately}2{xi}{sub super}. Moreover, only samples exhibiting ln{ital T} dependence in the fermion region become global coherent superconductors at low temperature. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-02-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 53
Issue Number 6


Open content in new tab

   Open content in new tab