Fragile superconductivity in the presence of weakly disordered charge density waves

Yue Yu and S. A. Kivelson
Phys. Rev. B 99, 144513 – Published 16 April 2019

Abstract

When superconducting (SC) and charge-density-wave (CDW) orders compete, novel low-temperature behaviors can result. From an analysis of the Landau-Ginzburg-Wilson theory of competing orders, we demonstrate the generic occurrence of a “fragile” SC phase at low temperatures and high fields in the presence of weak disorder. Here, the SC order is largely concentrated in the vicinity of dilute dislocations in the CDW order, leading to transition temperatures and critical currents that are parametrically smaller than those characterizing the zero-field SC phase. This may provide the outline of an explanation of the recently discovered “resilient” superconducting phase at high fields in underdoped YBa2Cu3O6+δ.

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  • Received 6 October 2018
  • Revised 18 March 2019

DOI:https://doi.org/10.1103/PhysRevB.99.144513

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Yue Yu and S. A. Kivelson

  • Department of Physics, Stanford University, Stanford, California 94305, USA

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Issue

Vol. 99, Iss. 14 — 1 April 2019

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