Superfluid Suppression in d-Wave Superconductors due to Disordered Magnetism

Abstract

The influence of static magnetic correlations on the temperature-dependent superfluid density ρ_s(T) is calculated for d-wave superconductors. In self-consistent calculations, itinerant holes form incommensurate spin density waves (SDW) which coexist with superconductivity. In the clean limit, the density of states is gapped, and ρ_s(T << T_c) is exponentially activated. In inhomogeneously-doped cases, the SDW are disordered and both the density of states and ρ_s(T) obtain forms indistinguishable from those in dirty but pure d-wave superconductors, in accordance with experiments. We conclude that the observed collapse of ρ_s at x\approx 0.35 in underdoped YBCO may plausibly be attributed to the coexistence of SDW and superconductivity.

6 pages, 5 figures. Expanded discussion

References in corpus (3)

• 4D-XY quantum criticality in a doped Mott insulator
• Finite temperature superfluid density in very underdoped cuprates
• An Alternative Interpretation of the Magnetic Penetration Depth Data on Pr(2-x)Ce(x)CuO(4-y) and La(2-x)Ce(x)CuO(4-y)

Cited by in corpus (4)

• Breakdown of universal transport in correlated d-wave superconductors
• Theory of Resistivity Upturns in Metallic Cuprates
• Extinction of quasiparticle interference in underdoped cuprates with coexisting order
• Extinction of impurity resonances in large-gap regions of inhomogeneous d-wave superconductors