Abstract
A theoretical study has been carried out on the spin-dependent electron transport in a hybrid magnetic–electric barrier nanostructure with both Rashba and Dresselhaus spin–orbit couplings, which can be experimentally realized by depositing a ferromagnetic strip and a Schottky metal strip on top of a semiconductor heterostructure. The spin–orbit coupling-dependent transmission coefficient, conductance, and spin polarization are calculated by solving the Schrödinger equation exactly with the help of the transfer-matrix method. We find that both the magnitude and sign of the electron spin polarization vary strongly with the spin–orbit coupling strength. Thus, the degree of electron spin polarization can be manipulated by properly adjusting the spin–orbit coupling strength, and such a nanosystem can be employed as a controllable spin filter for spintronics applications.
References
V. Kubrak, F. Rahman, B.L. Gallagher, P.C. Main, M. Henini, C.H. Marrows, and M.A. Howson, Appl. Phys. Lett. 74, 2507 (1999).
A. Matulis, F.M. Peeters, and P. VasiloPoulos, Phys. Rev. Lett. 72, 1518 (1994).
A. Nogaret, J. Phys. Condens. Matter 22, 253201 (2010).
F. Zhai, Y. Guo, and B.L. Gu, Phys. Rev. B 66, 125305 (2002).
M.W. Lu and L.D. Zhang, J. Phys. Condens. Matter 15, 1267 (2003).
X.D. Yang, R.Z. Wang, Y. Guo, W. Yang, D.B. Yu, B. Wang, and H. Yan, Phys. Rev. B 70, 115303 (2004).
A. Majumdar, Phys. Rev. B 54, 11911 (1996).
V.N. Dobrovosky, D.I. Sheka, and B.V. Chemyachuk, Surf. Sci. 397, 333 (1998).
Y. Guo, B.L. Gu, Z. Zeng, J.Z. Yu, and Y. Kawazoe, Phys. Rev. B 62, 2635 (2000).
I. Žutíc, J. Fabiam, and S. Das Sarma, Rev. Mod. Phys. 76, 323 (2004).
G. Papp and F.M. Peeters, Appl. Phys. Lett. 78, 2184 (2001).
G. Papp and F.M. Peeters, Appl. Phys. Lett. 79, 3198 (2001).
H.Z. Xu and Z. Shi, Appl. Phys. Lett. 81, 691 (2002).
G. Papp and F.M. Peeters, Appl. Phys. Lett. 82, 3570 (2003).
F. Zhai, H.Q. Xu, and Y. Guo, Phys. Rev. B 70, 085308 (2004).
J.D. Lu and L. Yi, Solid State Commun. 149, 2225 (2009).
J.D. Lu, Phys. Lett. A 374, 2270 (2010).
J.D. Lu, L. Yi, Y.B. Li, Y.H. Wang, and Y.L. Hou, Vacuum 86, 299 (2011).
M.W. Lu, Z.Y. Wang, X.L. Cao, and S. Li, Solid State Commun. 165, 45 (2013).
M.W. Lu, Z.Y. Wang, Y.L. Liang, Y.B. An, and Q.L. Li, Appl. Phys. Lett. 102, 022410 (2013).
M.W. Lu, Z.Y. Wang, Y.L. Liang, Y.B. An, and Q.L. Li, EPL 101, 47001 (2013).
S. Li, M.W. Lu, Y.Q. Jiang, and S.P. Yang, Phys. Lett. A 378, 3189 (2014).
E.I. Rashba, Sov. Phys. Solid State 2, 1109 (1960).
G. Dresselhaus, Phys. Rev. 100, 580 (1955).
Y. Jing and M.B.A. Jalil, J. Phys. Condens. Matter 15, L31 (2003).
W. Xu and Y. Guo, Phys. Lett. A 340, 281 (2005).
A. Nogaret, S.J. Bending, and M. Henini, Phys. Rev. Lett. 84, 2231 (2000).
M.W. Lu, L.D. Zhang, and X.H. Yan, Nanotechnology 14, 609 (2003).
M.W. Lu, L.D. Zhang, and X.H. Yan, Phys. Rev. B 66, 224412 (2002).
M. Büttiker, Phys. Rev. Lett. 57, 1761 (1986).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yang, SP., Lu, MW., Huang, XH. et al. Effect of Rashba and Dresselhaus Spin–Orbit Couplings on Electron Spin Polarization in a Hybrid Magnetic–Electric Barrier Nanostructure. J. Electron. Mater. 46, 1937–1942 (2017). https://doi.org/10.1007/s11664-017-5288-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11664-017-5288-0