Electron-spin dynamics in strongly correlated metals

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Abstract

The temperature dependence of the electron-spin lifetime T1 and the g factor are anomalous in alkali fullerides (K,Rb)3C60, which cannot be explained by the canonical Elliott-Yafet theory. These materials are archetypes of strongly correlated and narrow band metals. We introduce the concept of a "complex electron-spin resonance frequency shift" to treat these measurables in a unified manner within the Kubo formalism. The theory is applicable for metals with nearly degenerate conduction bands and large momentum scattering even with an anomalous temperature dependence and sizable residual value.

Original languageEnglish
Article number137001
JournalPhysical review letters
Volume102
Issue number13
DOIs
Publication statusPublished - Mar 30 2009

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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