Possibility of the vortex-antivortex transition temperature of a thin-film superconductor being renormalized by disorder

Journal Article · Wed Mar 01 00:00:00 EST 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.4105· OSTI ID:6203283

Hebard, A F; Kotliar, G

The universal relation between the Kosterlitz-Thouless transition temperature T/sub c/ and the superfluid sheet density of thin-film superconductors with mean-field transition temperature T/sub c//sub 0/ results in a monotonically decreasing dependence of the ratio T/sub c//T/sub c0/ on the normal-state sheet resistance R/sub n/. Ambiguity in the experimental definition of R/sub n/ in highly disordered thin-film superconductors is addressed by reexamining previously published data on amorphous composite In/InO/sub x/ films. Arguments are presented in favor of using the zero-temperature value of R/sub n/, a quantity obtained by extrapolation. The dependence of T/sub c//T/sub c0/ on R/sub n/ that results from such a choice is in agreement with theory for dirty superconductors and thus suggests that additional corrections to T/sub c/ in the presence of extreme disorder are not required.

• Research Organization: ATandT Bell Laboratories, Murray Hill, New Jersey 07974
• OSTI ID: 6203283
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 39:7
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SUPERCONDUCTING FILMS
TRANSITION TEMPERATURE
DATA ANALYSIS
ELECTRIC CONDUCTIVITY
INDIUM
INDIUM OXIDES
MAGNETIC FLUX
RENORMALIZATION
CHALCOGENIDES
ELECTRICAL PROPERTIES
ELEMENTS
FILMS
INDIUM COMPOUNDS
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
656100* - Condensed Matter Physics- Superconductivity