Direct measurement of the spin diffusion length by Andreev spectroscopy

A. Geresdi, A. Halbritter, F. Tanczikó, G. Mihály

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The application of point contact Andreev spectroscopy for the measurement of the spin diffusion length is demonstrated by studying the spin relaxation in platinum thin films grown on the top of a ferromagnetic cobalt layer. Using this local probe technique, the temperature dependence of the spin diffusion length was determined, and various sources of the spin relaxation in platinum were identified. At low temperatures the spin lifetime is found to be three orders of magnitude larger than the momentum lifetime. The applied method is selectively sensitive to spin-flip processes even in the presence of a huge background of momentum scattering.

Original languageEnglish
Article number212507
JournalApplied Physics Letters
Volume98
Issue number21
DOIs
Publication statusPublished - May 23 2011

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diffusion length
spectroscopy
platinum
momentum
life (durability)
cobalt
temperature dependence
probes
thin films
scattering

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Direct measurement of the spin diffusion length by Andreev spectroscopy. / Geresdi, A.; Halbritter, A.; Tanczikó, F.; Mihály, G.

In: Applied Physics Letters, Vol. 98, No. 21, 212507, 23.05.2011.

Research output: Contribution to journalArticle

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