Interlayer electrodynamics and unconventional vortex state in YBa2Cu3Oy
نویسندگان
چکیده
A. D. LaForge,1,* W. J. Padilla,1,† K. S. Burch,1,‡ Z. Q. Li,1 S. V. Dordevic,2 Kouji Segawa,3 Yoichi Ando,3 and D. N. Basov1 1Department of Physics, University of California, San Diego, La Jolla, California 92093, USA 2Department of Physics, The University of Akron, Akron, Ohio 44325, USA 3Central Research Institute of the Electric Power Industry, Komae, Tokyo 201-8511, Japan Received 23 March 2007; revised manuscript received 24 May 2007; published 31 August 2007
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Entanglement of solid vortex matter: a boomerang-shaped reduction forced by disorder in interlayer phase coherence in Bi2Sr2CaCu2O8+y.
We present evidence for entangled solid vortex matter in a glassy state in a layered superconductor Bi2Sr2CaCu2O8+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 coherenc...
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