TY - JOUR
T1 - Thickness-tuned superconductor-insulator transitions under magnetic field in a-NbSi
AU - Marrache-Kikuchi, C. A.
AU - Aubin, H.
AU - Pourret, A.
AU - Behnia, K.
AU - Lesueur, J.
AU - Bergé, L.
AU - Dumoulin, L.
PY - 2008/10/30
Y1 - 2008/10/30
N2 - We have studied the thickness-induced superconductor-to-insulator transition in the presence of a magnetic field for a-NbSi thin films. Analyzing the critical behavior of this system within the "dirty boson model," we have found a critical exponent product of νdz∼0.4. The corresponding phase diagram in the (H,d) plane is inferred. This small exponent product, as well as the nonuniversal value of the critical resistance found at the transition, calls for further investigations in order to thoroughly understand these transitions.
AB - We have studied the thickness-induced superconductor-to-insulator transition in the presence of a magnetic field for a-NbSi thin films. Analyzing the critical behavior of this system within the "dirty boson model," we have found a critical exponent product of νdz∼0.4. The corresponding phase diagram in the (H,d) plane is inferred. This small exponent product, as well as the nonuniversal value of the critical resistance found at the transition, calls for further investigations in order to thoroughly understand these transitions.
U2 - 10.1103/PhysRevB.78.144520
DO - 10.1103/PhysRevB.78.144520
M3 - Article
AN - SCOPUS:55349110832
SN - 1098-0121
VL - 78
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 14
M1 - 144520
ER -