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Detection and decoherence of level-crossing resonances of 8Li in Cu

  • K. H. Chow*
  • , A. I. Mansour
  • , I. Fan
  • , R. F. Kiefl
  • , G. D. Morris
  • , Z. Salman
  • , T. Dunlop
  • , W. A. MacFarlane
  • , H. Saadaoui
  • , O. Mosendz
  • , B. Kardasz
  • , B. Heinrich
  • , J. Jung
  • , C. D.P. Levy
  • , M. R. Pearson
  • , T. J. Parolin
  • , D. Wang
  • , M. D. Hossain
  • , Q. Song
  • , M. Smadella
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Level-crossing resonances are observed for spin-polarized 8Li in copper at 200 K. The positions of the resonances as a function of magnetic field and crystal orientation are a precise measure of the induced quadrupolar interaction on the nearest-neighbor Cu spins and provide unambiguous evidence that 8Li occupies a substitutional site. The resonances are detected as enhancements in the 8Li spin relaxation rate and are much broader than predicted from a static spin Hamiltonian. A strong collision model is used to extract a decoherence time as a result of the dipolar coupling of the 8Li-Cu subsystem to the surrounding nuclear spin bath.

Original languageEnglish
Article number092103
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number9
DOIs
StatePublished - 20 Mar 2012
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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