Enhanced Spin Dependent Shot Noise in Magnetic Tunnel Barriers

(2) Department of Physics; Astronomy; R. A. Webb (1) ((1) Department of Physics; S. Garzon (1); University of Pennsylvania); University of South Carolina; USC Nanocenter; Y. Chen (2)

arxiv: cond-mat/0701458 · v1 · submitted 2007-01-18 · ❄️ cond-mat.mes-hall

Enhanced Spin Dependent Shot Noise in Magnetic Tunnel Barriers

S. Garzon (1) , Y. Chen (2) , R. A. Webb (1) ((1) Department of Physics , Astronomy , USC Nanocenter , University of South Carolina , (2) Department of Physics , University of Pennsylvania) This is my paper

classification ❄️ cond-mat.mes-hall

keywords dependentspinbarriersenhancedlocalizedmagneticnoiseshot

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We report the observation of enhanced spin dependent shot noise in magnetic tunnel barriers, suggesting transport through localized states within the barrier. This is supported by the existence of negative magnetoresistance and structure in the differential conductance curves. A simple model of tunneling through two interacting localized states with spin dependent tunneling rates is used to explain our observations.

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Enhanced Spin Dependent Shot Noise in Magnetic Tunnel Barriers

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