Nuclear spin relaxation due to random motion of vortex bundles

V. Ashkenazy, G. Jung, B. Ya Shapiro

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The dependence of nuclear-spin-relaxation rate (Formula presented) on NMR resonant frequency for a layered superconducting sample has been analyzed theoretically. In the considered arrangement the Zeeman field has been applied in the plane of superconducting layers while the relaxation was due to interactions between the spin systems and moving flux bundles, created by the transport current flowing along superconducting layers. It has been found that the functional form of a dependence of spin-relaxation rate on the Zeeman field has two components, a Lorentzian and an oscillatory one. The characteristic rolloff frequency of the Lorentzian component depends on the pinning properties of the sample. The period of oscillations of the oscillatory component is of the order of the inverse of interaction time of flowing flux bundles with a probe nucleus.

Original languageEnglish
Pages (from-to)2686-2690
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume53
Issue number5
DOIs
StatePublished - 1 Jan 1996
Externally publishedYes

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