Spin-polarized transport in inhomogeneous magnetic semiconductors: Theory of magnetic/nonmagnetic p-n junctions

Igor Žutić; Jaroslav Fabian; S. Das Sarma

doi:10.1103/PhysRevLett.88.066603

Spin-polarized transport in inhomogeneous magnetic semiconductors: Theory of magnetic/nonmagnetic p-n junctions

Igor Žutić
, Jaroslav Fabian
, S. Das Sarma

Physics

University at Buffalo

University of Maryland, College Park
Max-Planck-Institute for the Physics of Complex Systems

Research output: Contribution to journal › Article › peer-review

248 Scopus citations

Abstract

Bipolar spin-polarized transport in magnetic/nonmagnetic p-n junctions was studied. Novel phenomena of exponential and giant magnetoresistance, and of spin-voltaic effect, if nonequilibrium spin is added into the junction, were observed. It was demonstrated that no spin injection or extraction is possible under low bias, and that only nonequilibrium spin can be transferred through the space-charge region. Finally, a modified Shockley model was introduced to explain the numerical results.

Original language	English
Article number	066603
Pages (from-to)	66603/1-66603/4
Journal	Physical Review Letters
Volume	88
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.88.066603
State	Published - Feb 11 2002

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title = "Spin-polarized transport in inhomogeneous magnetic semiconductors: Theory of magnetic/nonmagnetic p-n junctions",

abstract = "Bipolar spin-polarized transport in magnetic/nonmagnetic p-n junctions was studied. Novel phenomena of exponential and giant magnetoresistance, and of spin-voltaic effect, if nonequilibrium spin is added into the junction, were observed. It was demonstrated that no spin injection or extraction is possible under low bias, and that only nonequilibrium spin can be transferred through the space-charge region. Finally, a modified Shockley model was introduced to explain the numerical results.",

author = "Igor {\v Z}uti{\'c} and Jaroslav Fabian and \{Das Sarma\}, S.",

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AU - Žutić, Igor

AU - Fabian, Jaroslav

AU - Das Sarma, S.

PY - 2002/2/11

Y1 - 2002/2/11

N2 - Bipolar spin-polarized transport in magnetic/nonmagnetic p-n junctions was studied. Novel phenomena of exponential and giant magnetoresistance, and of spin-voltaic effect, if nonequilibrium spin is added into the junction, were observed. It was demonstrated that no spin injection or extraction is possible under low bias, and that only nonequilibrium spin can be transferred through the space-charge region. Finally, a modified Shockley model was introduced to explain the numerical results.

AB - Bipolar spin-polarized transport in magnetic/nonmagnetic p-n junctions was studied. Novel phenomena of exponential and giant magnetoresistance, and of spin-voltaic effect, if nonequilibrium spin is added into the junction, were observed. It was demonstrated that no spin injection or extraction is possible under low bias, and that only nonequilibrium spin can be transferred through the space-charge region. Finally, a modified Shockley model was introduced to explain the numerical results.

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U2 - 10.1103/PhysRevLett.88.066603

DO - 10.1103/PhysRevLett.88.066603

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JO - Physical Review Letters

JF - Physical Review Letters

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Spin-polarized transport in inhomogeneous magnetic semiconductors: Theory of magnetic/nonmagnetic p-n junctions

Abstract

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