TY - JOUR
T1 - Giant flux creep and irreversibility in an Y-Ba-Cu-O crystal
T2 - An alternative to the superconducting-glass model
AU - Yeshurun, Y.
AU - Malozemoff, A. P.
PY - 1988
Y1 - 1988
N2 - We report strong, anisotropic magnetic relaxation of the field-cooled and zero-field-cooled magnetization along the principal axes of an Y-Ba-Cu-O single crystal and interpret it with a thermally activated flux-creep model. A simple scaling argument shows that high thermal activation causes magnetic irreversibilities and critical currents to drop below the threshold of detectability at a reduced temperature difference 1-t proportional to H23, a power frequently observed in experiment and in particular in our crystal.
AB - We report strong, anisotropic magnetic relaxation of the field-cooled and zero-field-cooled magnetization along the principal axes of an Y-Ba-Cu-O single crystal and interpret it with a thermally activated flux-creep model. A simple scaling argument shows that high thermal activation causes magnetic irreversibilities and critical currents to drop below the threshold of detectability at a reduced temperature difference 1-t proportional to H23, a power frequently observed in experiment and in particular in our crystal.
UR - http://www.scopus.com/inward/record.url?scp=35348980334&partnerID=8YFLogxK
U2 - 10.1103/physrevlett.60.2202
DO - 10.1103/physrevlett.60.2202
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AN - SCOPUS:35348980334
SN - 0031-9007
VL - 60
SP - 2202
EP - 2205
JO - Physical Review Letters
JF - Physical Review Letters
IS - 21
ER -