Decay of spin-polarized hot carrier current in a quasi-one-dimensional spin-valve structure

Applied Physics Letters

Volumn 84, Issue 2, 2004, Pages 266-268

  Pramanik, S ^a   Bandyopadhyay, S ^a   Cahay, M ^b  

^a Virginia Commonwealth University   (United States)

^b UNIVERSITY OF CINCINNATI   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CARRIER CONCENTRATION; COMPUTER SIMULATION; ELECTRIC FIELDS; ELECTRON ENERGY LEVELS; ELECTRON SCATTERING; FERROMAGNETIC MATERIALS; MAGNETIZATION; MONTE CARLO METHODS; PERTURBATION TECHNIQUES; RELAXATION PROCESSES; SEMICONDUCTING GALLIUM ARSENIDE; SEMICONDUCTOR QUANTUM WIRES;

CARRIER CONFINEMENT; CARRIER SCATTERING; FERMI-DIRAC DISTRIBUTION; FERROMAGNETIC CONTACT; MULTI CHANNELED TRANSPORT; QUASI ONE DIMENSIONAL SPIN VALVE STRUCTURE; SPIN ORBIT INTERACTION; SPIN POLARIZED HOT CARRIER CURRENT; SPIN RELAXATION;

ELECTRON TRANSPORT PROPERTIES;

EID: 0842290099     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1639127     Document Type: Article

References (26)

1. B. Dieny, V. S. Speriosu, S. S. P. Parkin, B. A. Gurney, D. R. Wilhoit, and D. Mauri, Phys. Rev. B 43, 1297 (1991).
2. S. Datta and B. Das, Appl. Phys. Lett. 56, 665 (1990).
3. G. Dresselhaus, Phys. Rev. 100, 580 (1955).
4. E. I. Rashba, Sov. Phys. Semicond. 2, 1109
5. Y. A. Bychkov and E. I. Rashba, J. Phys. C 17, 6039 (1984).
6. M. I. D'yakonov and V. I. Perel', Sov. Phys. Solid State 13, 3023 (1972).
7. R. J. Elliott, Phys. Rev. 96, 266 (1954).
8. G. L. Bir, A. G. Aronov, and G. E. Pikus, Sov. Phys. JETP 42, 705 (1976).
9. A. Bournel, P. Dollfus, S. Galdin, F.-X. Musalem, and P. Hesto, Solid State Commun. 104, 85 (1997)
10. A. Bournel, P. Dollfus, P. Bruno, and P. Hesto, Mater. Sci. Forum 297-298, 205 (1999)
11. A. Bournel, V. Delmouly, P. Dollfus, G. Tremblay, and P. Hesto, Physica E (Amsterdam) 10, 86 (2001).
12. S. Saikin, M. Shen, M. C. Cheng, and V. Privman, www.arXiv.org/cond-mat/0212610
13. M. Shen, S. Saikin, M. C. Cheng, and V. Privman, www.arXiv.org/cond-mat/0302395.
14. S. Pramanik, S. Bandyopadhyay, and M. Cahay, Phys. Rev. B 68, 075313 (2003).
15. It is possible to introduce some band structure non-parabolicity by using an energy-dependent effective mass. However, this is not important. The carrier kinetic energies remain small in every subband so that nonparabolicity effects are never significant. If the energy of a carrier in the lowest subbands begins to increase, the carrier suffers intersubband transition to a higher subband by adbsorbing or emitting phonons. This process keeps the kinetic energy in every subband small and the carrier temperature remains very close to the lattice temperature. The intersubband scattering (not intervalley transfer) is also responsible for velocity saturation in the quantum wire.
16. L. W. Molenkamp, G. Schmidt, and G. E. W. Bauer, Phys. Rev. B 64, 121202(R) (2001).
17. M. Governale and U. Zülicke, Phys. Rev. B 66, 073311 (2002).
18. H. Sakaki, Jpn. J. Appl. Phys. 19, L735 (1980).
19. N. Telang and S. Bandyopadhyay, Phys. Rev. B 48, 18002 (1993).
20. N. Telang and S. Bandyopadhyay, Appl. Phys. Lett. 66, 1623 (1995)
21. Phys. Rev. B 51, 9728 (1995).
22. M. Cahay and S. Bandyopadhyay, Phys. Rev. B 68, 115316 (2003).
23. M. Cahay and S. Badyopadhyay, Phys. Rev. B (to be published).
24. D. D. Awschalom and J. M. Kikkawa, Phys. Today 52, 33 (1999)
25. Phys. Rev. Lett. 80, 4313 (1998)
26. Nature (London) 397, 139 (1999).