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Tunneling magnetoresistance of a GaMnAs-based double barrier ferromagnetic tunnel junction.
- Source :
-
Journal of Applied Physics . 5/1/2000, Vol. 87 Issue 9, p4673. 3p. - Publication Year :
- 2000
-
Abstract
- Introduction of a ferromagnetic quantum well in a ferromagnetic tunnel junction is shown to greatly enhance the tunneling magnetoresistance (TMR) effect, due to spin filtering as well as energy filtering. We have theoretically analyzed resonant transmission probability of a magnetic double barrier heterostructure consisting of III–V based ferromagnetic semiconductor GaMnAs, and nonmagnetic semiconductor AlAs. Experimentally, we have observed very large TMR effect of such a system grown by low-temperature molecular-beam epitaxy, and have shown that some of the measured tunneling features are attributed to spin-dependent resonant tunneling. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FERROMAGNETISM
*QUANTUM wells
*MAGNETORESISTANCE
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 87
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 5401556
- Full Text :
- https://doi.org/10.1063/1.373126