TY - JOUR
T1 - Heat-capacity measurements of the critical coupling between aluminum grains
AU - Worthington, T.
AU - Lindenfeld, P.
AU - Deutscher, G.
PY - 1978
Y1 - 1978
N2 - We have measured the heat capacity of granular aluminum specimens with normal-state resistivities N between 0.6×10-3 and 40 × 10-3 cm. The specimens become superconducting with a heat-capacity transition which is BCS-like for the lowest N, and then diminishes until it is no longer observable for the highest N. We conclude that the grains become decoupled such that, because of their small size, they do not exhibit bulk superconductivity when they are isolated.
AB - We have measured the heat capacity of granular aluminum specimens with normal-state resistivities N between 0.6×10-3 and 40 × 10-3 cm. The specimens become superconducting with a heat-capacity transition which is BCS-like for the lowest N, and then diminishes until it is no longer observable for the highest N. We conclude that the grains become decoupled such that, because of their small size, they do not exhibit bulk superconductivity when they are isolated.
UR - http://www.scopus.com/inward/record.url?scp=25544460822&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.41.316
DO - 10.1103/PhysRevLett.41.316
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AN - SCOPUS:25544460822
VL - 41
SP - 316
EP - 319
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 5
ER -