Vanishing of phase coherence in underdoped Bi_2Sr_2CaCu_2O_8+d

(2) Univ. of Illinois at Urbana; (3) Oxxel GmbH); I. Bozovic (3) ((1) UC Berkeley; J. Corson (1); J. N. Eckstein (2); J. Orenstein (1); Lawrence Berkeley National Lab; R. Mallozzi (1)

arxiv: cond-mat/9810280 · v4 · submitted 1998-10-21 · ❄️ cond-mat.supr-con

Vanishing of phase coherence in underdoped Bi₂Sr₂CaCu₂O₈+d

J. Corson (1) , R. Mallozzi (1) , J. Orenstein (1) , J. N. Eckstein (2) , I. Bozovic (3) ((1) UC Berkeley , Lawrence Berkeley National Lab , (2) Univ. of Illinois at Urbana , (3) Oxxel GmbH) This is my paper

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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Vanishing of phase coherence in underdoped Bi₂Sr₂CaCu₂O₈+d

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