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Zero-Bias Anomaly in Magnetic Tunnel Junctions

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Yang H., Yang S., Ilnicki G., Martinek J., Parkin S.
Acta Physica Polonica A
|
2010
|
vol. 118
|
issue 2
316-318
EN
We present experimental results, which may indicate the possibility of the coexistence of the Kondo effect and ferromagnetism in macroscopic planar magnetic tunnel junctions with a layer of nanodots inside tunnel barriers. A conductance double peak structure was observed. Magnetic field dependence of the splitting of a conductance peak, and temperature evolution of the conductance curves are well explained from the theoretical point of view according to the predictions of the Kondo physics and cotunneling in the Anderson quantum dot coupled to ferromagnetic leads.
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