Effect of Rashba spin-orbit coupling on the spin-polarized transport in ferromagnet/semiconductor double tunnel junctions |
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Authors: | Lei Cai Jing-guo Hu Guo-jun Jin |
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Institution: | a Department of Physics, Yangzhou University, Yangzhou 225002, People's Republic of China b Department of Physics, Nanjing normal University, Nanjing 210097, People's Republic of China c Department of Physics, Nanjing University, Nanjing 210093, People's Republic of China |
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Abstract: | Considering the Rashba spin-orbit interaction in the semiconductor, we study theoretically the spin-polarized transport in a two-dimensional ferromagnetic semiconductor double tunnel junctions by a quantum-mechanical approach. It is found that the transmission coefficient shows typical resonant transmission properties and the Rashba spin-orbit coupling has great different influences on the transmission coefficients of electrons with spin-up and down and tunnelling magnetoresistance (TMR). More importantly, the TMR is significantly enhanced by increasing the spin-orbit coupling, which is very useful for the designing of magnetic digital and memory sensor. |
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Keywords: | 74 50 +r 74 45 +c 75 50 Pp |
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