Entanglement of Solid Vortex Matter: A Boomerang Shaped Reduction Forced by Disorder in Interlayer Phase Coherence in Bi2Sr2CaCu2O8+y
| Autor: | Kato, T., Shibauchi, T., Matsuda, Y., Thompson, J. R., Krusin-Elbaum, L. |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 101, 027003 (2008). |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.101.027003 |
| Popis: | We present evidence for entangled solid vortex matter in a glassy state in a layered superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+y}$ containing randomly splayed linear defects. The interlayer phase coherence--probed by the Josephson plasma resonance--is enhanced at high temperatures, reflecting the recoupling of vortex liquid by the defects. At low temperatures in the vortex solid state, the interlayer coherence follows a boomerang-shaped reentrant temperature path with an unusual low field decrease in coherence, indicative of meandering vortices. We uncover a distinct temperature scaling between in-plane and out-of-plane critical currents with opposing dependencies on field and time, consistent with the theoretically proposed "splayed-glass" state. Comment: 4 pages, 4 figures, accepted for publication in Phys. Rev. Lett |
| Databáze: | arXiv |
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