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Author
Valenzuela, S.O.
;
Maiorov, B.
;
Osquiguil, E.
;
Bekeris, V.
Title
Elastic-to-plastic crossover below the peak effect in the vortex solid of YBa2Cu3O7 single crystals
Type
Journal Article
Year
2002
Publication
Physical Review B – Condensed Matter and Materials Physics
Abbreviated Journal
Phys. Rev. B Condens. Matter Mater. Phys.
Volume
65
Issue
6
Pages
605041-605044
Keywords
barium
;
copper
;
yttrium
;
analytic method
;
article
;
crystal structure
;
elasticity
;
molecular interaction
;
stress
;
structure analysis
;
temperature
;
vortex motion
Abstract
We report on transport and ac susceptibility studies below the peak effect in twinned YBa2Cu3O7 single crystals. We find that disorder generated at the peak effect can be partially inhibited by forcing vortices to move with an ac driving current. The vortex system can be additionally ordered below a well-defined temperature where elastic interactions between vortices overcome pinning-generated stress and a plastic-to-elastic crossover seems to occur. The combined effect of these two processes results in vortex structures with different mobilities that give place to history effects.
Address
Physics Department, Harvard University, Cambridge, MA 02138, United States
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Cited By (since 1996): 11; Export Date: 17 April 2009; Source: Scopus; Art. No.: 060504; CODEN: PRBMD; Language of Original Document: English; Correspondence Address: Valenzuela, S.O.; Physics Department; Harvard University Cambridge, MA 02138, United States; References: De Sorbo, W., (1964) Rev. Mod. Phys., 36, p. 90; Pippard, A.B., (1969) Philos. Mag., 19, p. 217; Larkin, A.I., Ovchinnikov, Y.N., (1979) J. Low Temp. Phys., 34, p. 409; W
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BT @ osquigui @
Serial
370
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