DocumentCode :
2934229
Title :
Magnetic Transport Study in NiFe-Al-NiFe Double-tunnel Junctions
Author :
Shyu, J. ; Chen, J. ; Tang, F. ; Yao, Y.
Author_Institution :
Nat. Taiwan Univ., Taipei
fYear :
2006
fDate :
8-12 May 2006
Firstpage :
72
Lastpage :
72
Abstract :
Spintronics, which utilizes spin-dependent transport mechanism, is a potential candidate for the next generation electronic devices. Separation of spin transport from charge transport is an essential issue in this emerging field. In this work, we study spin transport behavior in double-barrier tunnel junction structures in which the center electrode is made of Al and the two electrodes are made of Ni80Fe20. One method, which is called spin-valve effect, utilizes two ferromagnetic electrodes composed of parallel or antiparallel magnetization alignments to control transports of spin-polarized current. In antiparallel magnetization alignment, majority spin-polarized current is suppressed by the spin-valve effect and spin polarized electron is accumulated in the central island. If the central island is made of superconductor, the resultant nonequilibrium spin density strongly suppresses the superconductivity. In this study, we investigate the magnetic transport influenced by spin imbalance in NiFe-Al-NiFe double tunnel junctions.
Keywords :
aluminium; ferromagnetic materials; iron alloys; magnetic tunnelling; magnetisation; magnetoelectronics; nickel alloys; spin polarised transport; NiFe-Al; antiparallel magnetization alignment; center electrode; charge transport; double-barrier tunnel junction structures; double-tunnel junctions; ferromagnetic electrodes; magnetic transport study; nonequilibrium spin density; spin imbalance; spin polarized electron; spin transport; spin-dependent transport mechanism; spin-polarized current; spin-valve effect; spintronics; superconductivity; Electrodes; Electrons; Iron; Josephson junctions; Magnetic separation; Magnetization; Magnetoelectronics; Polarization; Superconducting magnets; Superconductivity;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
Type :
conf
DOI :
10.1109/INTMAG.2006.375572
Filename :
4261506
Link To Document :
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