Magnetism

Giant change in the magnetoimpedance of the magnetic tunnel junction by an AC bias voltage

D. V. Abdulkadyrov, N. N. Beletsky

Usikov Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine, Kharkov

Abstract: Electron tunneling through a nonstationary magnetic tunnel junction has been studied in the approximation of a small-amplitude ac electric field. The effect of a giant change in the magnetoimpedance of a magnetic tunnel junction, which occurs at some frequencies of an ac bias voltage, has been predicted. The dependence of the effect of a giant change in the magnetoimpedance on the height and thickness of the magnetic tunnel junction and on the dc bias voltage has been studied.

Received: 20.10.2010

 English version: Physics of the Solid State, 2011, 53:5, 997–1004

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