Vanishing of phase coherence in underdoped Bi_2Sr_2CaCu_2O_8+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)
TL;DR
This study uses time-domain spectroscopy to investigate phase coherence loss in underdoped Bi_2Sr_2CaCu_2O_8+d, revealing a transition driven by phase fluctuations consistent with BKT vortex unbinding.
Contribution
It provides direct experimental evidence linking phase fluctuations to the superconductor-normal transition in underdoped cuprates, supporting BKT theory applicability.
Findings
Phase coherence vanishes at the transition.
Transition dynamics align with BKT vortex unbinding.
Evidence of phase-fluctuation driven transition.
Abstract
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.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.