Thermoelectric effects in mesoscopic AuFe spin-glass wires

G. Neuttiens*, J. Eom, C. Strunk, H. Pattyn, C. Van Haesendonck, Y. Bruynseraede, Venkat Chandrasekhar

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Recently we reported on the differential resistance R(I) = dV/dI of narrow AuFe spin-glass wires (Phys. Rev. Let., 77 (1996) 2276). Surprisingly, R(I) was found to be asymmetric in I for the smallest samples. In this letter we present differential resistance measurements performed on a AuFe wire with a multiprobe geometry. The new experiments reveal that the asymmetric behavior of R(I) can be explained in terms of a mesoscopic thermoelectric effect. Our experiments also indicate that the therrnopower S of a AuFe spin-glass alloy becomes size dependent for length scales below a few hundred nanometers.

Original languageEnglish (US)
Pages (from-to)185-190
Number of pages6
JournalEurophysics Letters
Volume42
Issue number2
DOIs
StatePublished - Apr 15 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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