TY - JOUR
T1 - Resistive transition in YBa2Cu3Oz and Bi2(Sr,Ca)3Cu2Oz CVD films under high magnetic field
AU - Kobayashi, N.
AU - Iwasaki, H.
AU - Kawabe, H.
AU - Watanabe, K.
AU - Yamane, H.
AU - Kurosawa, H.
AU - Masumoto, H.
AU - Hirai, T.
AU - Muto, Y.
N1 - Funding Information:
We would like to thank ProfessorsT . Matsushita (Kyushu Univ. ), T. Fukasea ndY. Koike for helpful discussionsT. his work was partly supportedb y Grant-in-Aid for Scientific Research on Priority Areas "Mechanismo f Superconductivitfyr"o m the Ministry of EducationS, ciencea nd Culture,J apan. The experimentwse rep artlyc onducteadt High Field Laboratoryfo r SuperconductinMga terialsI,n stitute for MaterialsR esearchT, ohokuUniversity.
PY - 1989/6/15
Y1 - 1989/6/15
N2 - Electrical resistance of YBa2Cu3Oz and Bi2(Sr,Ca)3Cu2Oz CVD films in the mixed state was investigated in magnetic field up to 25 T. The sheet resistance in the broad transition is expressed by R□=R0exp(-U0/kBT) on the low temperature side, and it is independent of the configuration of current with respect to the magnetic field. The activation energy U0 is larger in YBa2Cu3Oz films. The U0 value becomes smaller proportional to B-α with increasing field. Moreover, the resistance follows a power law of Bγ at constant temperature. The value of exponent γ is larger than unity and increases with decreasing temperature. These behaviors are discussed based on the flux creep models by Tinkham and by Dew-Hughes.
AB - Electrical resistance of YBa2Cu3Oz and Bi2(Sr,Ca)3Cu2Oz CVD films in the mixed state was investigated in magnetic field up to 25 T. The sheet resistance in the broad transition is expressed by R□=R0exp(-U0/kBT) on the low temperature side, and it is independent of the configuration of current with respect to the magnetic field. The activation energy U0 is larger in YBa2Cu3Oz films. The U0 value becomes smaller proportional to B-α with increasing field. Moreover, the resistance follows a power law of Bγ at constant temperature. The value of exponent γ is larger than unity and increases with decreasing temperature. These behaviors are discussed based on the flux creep models by Tinkham and by Dew-Hughes.
UR - http://www.scopus.com/inward/record.url?scp=0024680725&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024680725&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(89)90383-3
DO - 10.1016/0921-4534(89)90383-3
M3 - Article
AN - SCOPUS:0024680725
VL - 159
SP - 295
EP - 300
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 3
ER -