Article (Scientific journals)
Anomalous behavior of the irreversible magnetization and time relaxation in YBa(2)Cu(3)O(7) single crystals with splayed tracks
Silhanek, Alejandro; Niebieskikwiat, D.; Civale, L. et al.
1999In Physical Review. B, Condensed Matter, 60 (18), p. 13189-13195
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Keywords :
superconductivity
Abstract :
[en] We have studied the angular dependence of the irreversible magnetization and its time relaxation in YBa(2)Cu(3)O(7) Single crystals with one or two families of columnar defects inclined with respect to the c axis. At high magnetic fields, the magnetization shows the usual maximum centered at the mean tracks' orientation and an associated minimum in the normalized relaxation rate. In contrast, at low fields we observe an anomalous local minimum in the magnetization and a maximum in the relaxation rate. We present a model to explain this anomaly based on the slowing down of the creep processes arising from the increase of the vortex-vortex interactions as the applied field is tilted away from the mean tracks' direction. [S0163-1829(99)11841-1].
Disciplines :
Physics
Author, co-author :
Silhanek, Alejandro  ;  Centro Atomico Bariloche (Argentina) > Instituto Balseiro
Niebieskikwiat, D.
Civale, L.
Avila, M. A.
Billoni, O.
Casa, D.
Language :
English
Title :
Anomalous behavior of the irreversible magnetization and time relaxation in YBa(2)Cu(3)O(7) single crystals with splayed tracks
Publication date :
1999
Journal title :
Physical Review. B, Condensed Matter
ISSN :
0163-1829
eISSN :
1095-3795
Publisher :
American Institute of Physics, New York, United States - New York
Volume :
60
Issue :
18
Pages :
13189-13195
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 November 2011

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