Evidence for Correlated Dynamics near the Berezinskii-Kosterlitz-Thouless-like Transition in Highly Underdoped La${}_{2-x}$Sr${}_x$CuO${}_4$

Abstract

A low-frequency resistance noise study in highly underdoped thick films of La${}_{2-x}$Sr${}_x$CuO${}_4$ ($x=0.07$ and 0.08) reveals slow, correlated dynamics and breaking of ergodicity near the superconducting transition of the Berezinskii-Kosterlitz-Thouless type. The observed correlated behavior is strongly suppressed by disorder.

arXiv comment6 pages, 5 figures

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Cited by in corpus (4)

• Quantum phase transition in few-layer NbSe${}_2$ probed through quantized conductance fluctuations
• Symmetry breaking at a topological phase transition
• An electric-field representation of the harmonic XY model
• Emergent electrostatics in planar XY spin models: the bridge connecting topological order with broken $U(1)$ symmetry