TY - JOUR
T1 - Universal transport in two-dimensional granular superconductors
AU - Frydman, A.
AU - Naaman, O.
AU - Dynes, R. C.
PY - 2002/8/1
Y1 - 2002/8/1
N2 - The transport properties of quench condensed granular superconductors (Pb, Sn, and Pb-Ag films) are presented and analyzed. These systems exhibit transitions from insulating to superconducting behavior as a function of intergrain spacing. Superconductivity is characterized by broad transitions in which the resistance drops exponentially with reducing temperature. The slope of the log R versus T curves turns out to be universally dependent on the normal state film resistance for all measured granular systems. It does not depend on the material, critical temperature, geometry, or experimental setup. We discuss possible physical scenarios to explain these findings.
AB - The transport properties of quench condensed granular superconductors (Pb, Sn, and Pb-Ag films) are presented and analyzed. These systems exhibit transitions from insulating to superconducting behavior as a function of intergrain spacing. Superconductivity is characterized by broad transitions in which the resistance drops exponentially with reducing temperature. The slope of the log R versus T curves turns out to be universally dependent on the normal state film resistance for all measured granular systems. It does not depend on the material, critical temperature, geometry, or experimental setup. We discuss possible physical scenarios to explain these findings.
UR - http://www.scopus.com/inward/record.url?scp=0036695676&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.66.052509
DO - 10.1103/PhysRevB.66.052509
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0036695676
SN - 0163-1829
VL - 66
SP - 525091
EP - 525094
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 5
M1 - 052509
ER -