Spin injection and detection in magnetic nanostructures
作者： S. Takahashi , S. Maekawa
DOI: 10.1103/PHYSREVB.67.052409
关键词:
摘要: We study theoretically the spin transport in a nonmagnetic metal connected to ferromagnetic injector and detector electrodes. derive general expression for accumulation signal which covers from metallic tunneling regime. This enables us discuss recent controversy on injection detection experiments. Extending result superconducting device, we find that is strongly enhanced by opening of gap since gapped superconductor low carrier system but not charge. The enhancement also expected semiconductor devices.
harvard.edu
arxiv.org
elsevier.com
sci-hub.se 参考文章(37)
F. J. Jedema, A. T. Filip, B. J. van Wees, Electrical spin injection and accumulation at room temperature in an all-metal mesoscopic spin valve Nature. ,vol. 410, pp. 345- 348 ,(2001) , 10.1038/35066533
Y. Ohno, D. K. Young, B. Beschoten, F. Matsukura, H. Ohno, D. D. Awschalom, Electrical spin injection in a ferromagnetic semiconductor heterostructure Nature. ,vol. 402, pp. 790- 792 ,(1999) , 10.1038/45509
R. Fiederling, M. Keim, G. Reuscher, W. Ossau, G. Schmidt, A. Waag, L. W. Molenkamp, Injection and detection of a spin-polarized current in a light-emitting diode Nature. ,vol. 402, pp. 787- 790 ,(1999) , 10.1038/45502
Z. W. Dong, R. Ramesh, T. Venkatesan, Mark Johnson, Z. Y. Chen, S. P. Pai, V. Talyansky, R. P. Sharma, R. Shreekala, C. J. Lobb, R. L. Greene, Spin-polarized quasiparticle injection devices using Au/YBa2Cu3O7/LaAlO3/Nd0.7Sr0.3MnO3 heterostructures Applied Physics Letters. ,vol. 71, pp. 1718- 1720 ,(1997) , 10.1063/1.120014
S. Takahashi, S. Maekawa, Hall effect induced by a spin-polarized current in superconductors. Physical Review Letters. ,vol. 88, pp. 116601- 116601 ,(2002) , 10.1103/PHYSREVLETT.88.116601
V. A. Vas'ko, V. A. Larkin, P. A. Kraus, K. R. Nikolaev, D. E. Grupp, C. A. Nordman, A. M. Goldman, Critical Current Suppression in a Superconductor by Injection of Spin-Polarized Carriers from a Ferromagnet Physical Review Letters. ,vol. 78, pp. 1134- 1137 ,(1997) , 10.1103/PHYSREVLETT.78.1134
J. M. Kikkawa, D. D. Awschalom, Resonant Spin Amplification in n-Type GaAs Physical Review Letters. ,vol. 80, pp. 4313- 4316 ,(1998) , 10.1103/PHYSREVLETT.80.4313
A. Fert, H. Jaffrès, Conditions for efficient spin injection from a ferromagnetic metal into a semiconductor Physical Review B. ,vol. 64, pp. 184420- ,(2001) , 10.1103/PHYSREVB.64.184420
T. Valet, A. Fert, Theory of the perpendicular magnetoresistance in magnetic multilayers. Physical Review B. ,vol. 48, pp. 7099- 7113 ,(1993) , 10.1103/PHYSREVB.48.7099
S.D. Steenwyk, S.Y. Hsu, R. Loloee, J. Bass, W.P. Pratt, Perpendicular-current exchange-biased spin-valve evidence for a short spin-diffusion lenght in permalloy Journal of Magnetism and Magnetic Materials. ,vol. 170, ,(1997) , 10.1016/S0304-8853(97)00061-9