Fragile superconductivity in the presence of weakly disordered charge density waves

Abstract

When superconducting (SC) and charge-density wave (CDW) orders compete, novel low temperature behaviors can result. From an analysis of the Landau-Ginzberg-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 YBa${}_2$Cu${}_3$O${}_{6+\delta }$.

10 figures. Revised with better explanation of the relation to Monte Carlo results

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• Suppression of charge density wave order by disorder in Pd-intercalated ErTe${}_3$
• Locally commensurate charge-density wave with three-unit-cell periodicity in YBCO
• Nodeless Superconductivity and its Evolution with Pressure in the Layered Dirac Semimetal 2M-WS_2
• Hydrostatic and uniaxial pressure tuning of iron-based superconductors: Insights into superconductivity, magnetism, nematicity and collapsed tetragonal transitions
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• Bulk superconductivity and role of fluctuations in the iron-based superconductor FeSe at high pressures
• Characterization of photoinduced normal state through charge density wave in superconducting YBa${}_2$Cu${}_3$O${}_{6.67}$
• Spatially Inhomogeneous Competition between Superconductivity and the Charge Density Wave in YBa${}_2$Cu${}_3$O${}_{6.67}$
• Unconventional quantum vortex matter state hosts quantum oscillations in the underdoped high-temperature cuprate superconductors
• Protected superconductivity at the boundaries of charge-density-wave domains
• Landau-Ginzburg theory of charge density wave formation accompanying lattice and electronic long-range ordering
• Linear Scaling of the Superfluid Density with the Critical Temperature in the Layered Superconductor 2H-NbSe_2
• Thermodynamic phase diagram of the competition between superconductivity and charge order in cuprates