Regensburg 2004 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 17: Postersitzung II: Transport, Quantenkoh
ärenz, Quantenflüssigkeiten

TT 17.16: Poster

Dienstag, 9. März 2004, 14:30–19:00, Poster A

Spin Hall Effect in paramagnetic Metal — •Christian Debuschewitz, Sergio O. Valenzuela, and Michael Tinkham — Department of Physics Gordon McKay Laboratory, Harvard University

When a current is circulating in a paramagnetic metal, electrons with spin up and spin down are predicted to separate due to skew scattering [1]. The generated spin imbalance results in a spin Hall voltage which can be measured by attaching a ferromagnet, perependicular to the current on one side of a gold wire [2]. By changing the magnetization of the ferromagnet, we observed a voltage difference of ≈ 100 nV.

[1] J. E. Hirsch PRL 83, 1834 (1999)

[2] S. Zhang PRL 85, 393 (2000)