Mn-based ferromagnetic semiconductors

Tomasz Dietl; Maciej Sawicki

doi:10.1117/12.475403

1 July 2003 Mn-based ferromagnetic semiconductors

Tomasz Dietl, Maciej Sawicki

Proceedings Volume 4999, Quantum Sensing: Evolution and Revolution from Past to Future; (2003) https://doi.org/10.1117/12.475403
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

Abstract

The present status of research and prospects for device applications of ferromagnetic (diluted magnetic) semiconductors (DMS) is presented. We review the nature of the electronic states and the mechanisms of the carrier-mediated exchange interactions (mean-field Zener model) in p-type Mn-based III-V and II-VI compounds, highlighting a good correspondence of experimental findings and theoretical predictions. An account of the latest progress on the road of increasing the Currie point to above the room temperature is given for both families of compounds. We comment on a possibility of obtaining ferromagnetism in n-type materials, taking (Zn,Mn)O:Al as the example. Concerning technologically important issue of easy axis and domain engineering, we present theoretical predictions and experimental results on the temperature and carrier concentration driven change of magnetic anisotropy in (Ga,Mn)As.

Citation Download Citation

Tomasz Dietl and Maciej Sawicki "Mn-based ferromagnetic semiconductors", Proc. SPIE 4999, Quantum Sensing: Evolution and Revolution from Past to Future, (1 July 2003); https://doi.org/10.1117/12.475403

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