Spin dynamics from majorana fermions

W. Mao, P. Coleman, C. Hooley, D. Langreth

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


Using the Majorana fermion representation of spin-[Formula presented] local moments, we show how the dynamic spin correlation and susceptibility are obtained directly from the one-particle Majorana propagator. We illustrate our method by applying it to the spin dynamics of a nonequilibrium quantum dot, computing the voltage-dependent spin relaxation rate and showing that, at weak coupling, the fluctuation-dissipation relation for the spin of a quantum dot is voltage dependent. We confirm the voltage-dependent Curie susceptibility recently found by Parcollet and Hooley [Phys. Rev. B 66, 085315 (2002)].

Original languageEnglish (US)
JournalPhysical review letters
Issue number20
StatePublished - 2003

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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