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Title: Vortex Softening: Origin of the Second Peak Effect in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O

Journal Article · · Physical Review Letters

Magnetic hysteresis and transverse ac permeability measurements in Bi{sub 2}Sr {sub 2}CaCu{sub 2}O{sub 8+{delta}} allow a comparative analysis of the critical current with the elastic response of vortex structures, in equilibrium with their pinning potential, in the field and temperature region where the second peak is detected. This study provides strong evidence that the second peak has its origin in changes of the elastic equilibrium properties of the vortex structures.

Sponsoring Organization:
(US)
OSTI ID:
40277297
Journal Information:
Physical Review Letters, Vol. 87, Issue 5; Other Information: DOI: 10.1103/PhysRevLett.87.057003; Othernumber: PRLTAO000087000005057003000001; 031131PRL; PBD: 30 Jul 2001; ISSN 0031-9007
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English

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