Revisiting the measurement of the spin relaxation time in graphene-based devices

H. Idzuchi, A. Fert, Y. Otani

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

A long spin relaxation time (τsf) is the key for the applications of graphene to spintronics but the experimental values of τsf have been generally much shorter than expected. We show that the usual determination by the Hanle method underestimates τsf if proper account of the spin absorption by contacts is lacking. By revisiting series of experimental results and taking into account the spin absorption, we find that the corrected τsf are longer and, for series of graphene samples of the same fabrication, less dispersed, which leads to a more unified picture of the τsf.

Original languageEnglish
Article number241407
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number24
DOIs
Publication statusPublished - 2015 Jun 23
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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