Nano Archive

Surface spin-valve effect

Yanson, I. K. and Naidyuk, Yu. G. and Fisun, V. V. and Konovalenko, A. and Balkashin, O. P. and Triputen, L. Yu. and Korenivski, V. (2007) Surface spin-valve effect. NANO LETTERS, 7 (4). pp. 927-931.

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We report an observation of spin-valve-like hysteresis within a few atomic layers at a ferromagnetic interface. We use phonon spectroscopy of nanometer-sized point contacts as an in situ probe to study the mechanism of the effect. Distinctive energy phonon peaks for contacts with dissimilar nonmagnetic outer electrodes allow localizing the observed spin switching to the top or bottom interfaces for nanometer thin ferromagnetic layers. The mechanism consistent with our data is energetically distinct atomically thin surface spin layers that can form current- or field-driven surface spin-valves within a single ferromagnetic film.

Item Type:Article
Subjects:Physical Science > Nanophysics
ID Code:6369
Deposited By:IoN
Deposited On:07 Aug 2009 09:28
Last Modified:07 Aug 2009 09:28

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