Fabian, Jaroslav and Zutic, Igor (2004) Spin switch and spin amplifier: magnetic bipolar transistor in the saturation regime. Acta Physica Polonica A 106 (2), pp. 109-118.
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It is shown that magnetic bipolar transistors (MBT) can amplify currents even in the saturation regime, in which both the emitter-base and collector-base junctions are forward biased. The collector current and the current gain can change sign as they depend on the relative orientation of the equi- librium spin in the base and on the nonequilibrium spin in the emitter and collector. The predicted phenomena should be useful for electrical detection of nonequilibrium spins in semiconductors, as well as for magnetic control of current amplification and for current switching.
|Institutions:||Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Owner:||Prof. Dr. Jaroslav Fabian|
|Deposited On:||20 Mar 2007|
|Last Modified:||28 Oct 2009 12:54|