Pinning of dynamic spin-density-wave fluctuations in cuprate superconductors

Anatoli Polkovnikov; Matthias Vojta; Subir Sachdev

doi:10.1103/PhysRevB.65.220509

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Pinning of dynamic spin-density-wave fluctuations in cuprate superconductors

Anatoli Polkovnikov, Matthias Vojta, Subir Sachdev

DOI 10.1103/PhysRevB.65.220509 · Physical Review B

T1

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Abstract

We present a theory of the pinning of dynamic spin-density-wave (SDW) fluctuations in a d-wave superconductor by local imperfections that preserve spin-rotation invariance, such as impurities or vortex cores. The pinning leads to static spatial modulations in spin-singlet observables, while the SDW correlations remain dynamic: these are the “Friedel oscillations” of a spin-gap antiferromagnet. We connect the spectrum of these modulations as observed by scanning tunnelling microscopy to the dynamic spin structure factor measured by inelastic neutron scattering.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown