Smith, A. W. and Jaeger, H. M. and Rosenbaum, T. F. and Kwok, W. K. and Crabtree, G. W. (1999) Signature of the matching field in Bose-glass melting of untwinned YBa_2Cu_3O_(7-δ) single crystals. Physical Review B, 59 (18). R11665-R11667. ISSN 1098-0121. https://resolver.caltech.edu/CaltechAUTHORS:20140707-163032049
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Abstract
We map out the phase boundary separating the Bose-glass and vortex-liquid phases in an irradiated twin-free YBa_2Cu_3O_(7-δ) single crystal. We take the phase boundary to be the temperature T_g and magnetic field H at which the crystal begins to screen a small ac magnetic field, h_(ac). There is a significant change in slope dT_g/dH of the phase boundary at the matching field B_Φ (≃0.5 T) indicating that interstitial vortices significantly weaken pinning in the Bose-glass state. There is also a pronounced peak in the slope dT_g/dH just below B_Φ at higher h_(ac). Both features disappear when the field is tilted away from the columns.
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| Alternate Title: | Signature of the matching field in Bose-glass melting of untwinned YBa2Cu3O7-δ single crystals | |||||||||
| Additional Information: | © 1999 The American Physical Society. Received 29 December 1998. We are grateful to L. Radzihovsky for illuminating discussions. This work was supported by the National Science Foundation (Grant No. DMR91-20000) through the Science and Technology Center for Superconductivity. G.W.C. and W.K. acknowledge support from the U.S. Department of Energy, Basic Energy Sciences–Materials Science under Contract No W-31-109-ENG-38. | |||||||||
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| Issue or Number: | 18 | |||||||||
| Record Number: | CaltechAUTHORS:20140707-163032049 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140707-163032049 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 46976 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 09 Jul 2014 21:01 | |||||||||
| Last Modified: | 03 Oct 2019 06:48 |
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