Electrical magnetization reversal in ferromagnetic semiconductors

F. Matsukura, D. Chiba, Michihiko Yamanouchi, H. Ohno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

III-V magnetic semiconductors, (Ga,Mn)As and (In,Mn)As, exhibit carrier-induced ferromagnetism and their magnetic properties are explained well by a mean-filed model [1]. They are among the promising materials for semiconductor spintronics because of novel spin-related phenomena in devices based on them, e.g. large tunneling magnetoresistance in a (Ga,Mn)As/GaAs/(Ga,Mn)As magnetic junction [2], a circular-polarized light-emission in a diode with a (Ga,Mn)As emitter [3], and isothermal magnetic phase transition in a field-effect transistor (FET) with an (In,Mn)As cannel [4]. Here, we show our recent studies on the electrical manipulation of the magnetization reversal in ferromagnetic semiconductor structures; (i) electric-field assisted magnetization reversal of (In,Mn)As in an FET structure, where the magnetic coercivity is modulated by external electric field thorough the change of carrier concentration [5], (ii) current-driven magnetization reversal of a patterned area of (Ga,Mn)As by magnetic domain wall propagation [6], and (iii) current-driven magnetization reversal of a (Ga,Mn)As electrode in a magnetic tunnel junction [7].

Original languageEnglish
Title of host publicationProceedings - 2004 International Conference on MEMS, NANO and Smart Systems, ICMENS 2004
EditorsW. Badawy, W. Moussa
Number of pages1
Publication statusPublished - 2004 Dec 1
EventProceedings - 2004 International Conference on MEMS, NANO and Smart Systems, ICMENS 2004 - Banff, Alta., Canada
Duration: 2004 Aug 252004 Aug 27

Publication series

NameProceedings - 2004 International Conference on MEMS, NANO and Smart Systems, ICMENS 2004

Other

OtherProceedings - 2004 International Conference on MEMS, NANO and Smart Systems, ICMENS 2004
CountryCanada
CityBanff, Alta.
Period04/8/2504/8/27

ASJC Scopus subject areas

  • Engineering(all)

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    Matsukura, F., Chiba, D., Yamanouchi, M., & Ohno, H. (2004). Electrical magnetization reversal in ferromagnetic semiconductors. In W. Badawy, & W. Moussa (Eds.), Proceedings - 2004 International Conference on MEMS, NANO and Smart Systems, ICMENS 2004 (Proceedings - 2004 International Conference on MEMS, NANO and Smart Systems, ICMENS 2004).