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Vanishing of phase coherence in underdoped Bi_2Sr_2CaCu_2O_8+d

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arxiv cond-mat/9810280 v4 pith:UPDVSZ4N submitted 1998-10-21 cond-mat.supr-con

classification cond-mat.supr-con
keywords cacuunderdopedberezinskii-kosterlitz-thoulesscoherencecoherentdescribeddirectdissipation
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Coherent time-domain spectroscopy is used to measure the screening and dissipation of high-frequency electromagnetic fields in a set of underdoped Bi_2Sr_2CaCu_2O_8+d thin films. The measurements provide direct evidence for a phase-fluctuation driven transition from the superconductor to normal state, with dynamics described well by the Berezinskii-Kosterlitz-Thouless theory of vortex-pair unbinding.

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Cited by 1 Pith paper

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  1. Preformed Cooper Pairs in a Triclinic Iron Pnictide Superconductor

    cond-mat.supr-con 2025-01 conditional novelty 6.0 of 10

    In a triclinic iron pnictide superconductor, a spin resonance precursor, Nernst signal, and NMR density-of-states reduction all point to preformed Cooper pairs persisting to T* = 45 K, above Tc = 30 K.

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