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Tunneling anisotropic magnetoresistance in epitaxial CoFe/n-GaAs junctions
| Title: | Tunneling anisotropic magnetoresistance in epitaxial CoFe/n-GaAs junctions |
| Authors: | Uemura, Tetsuya Browse this author →KAKEN DB | | Imai, Yosuke Browse this author | | Harada, Masanobu Browse this author | | Matsuda, Ken-ichi Browse this author →KAKEN DB | | Yamamoto, Masafumi Browse this author →KAKEN DB |
| Keywords: | cobalt alloys | | ferromagnetic materials | | gallium arsenide | | III-V semiconductors | | iron alloys | | magnetic anisotropy | | magnetic epitaxial layers | | semiconductor-metal boundaries | | spin-orbit interactions | | tunnelling magnetoresistance |
| Issue Date: | 4-May-2009 |
| Publisher: | American Institute of Physics |
| Journal Title: | Applied Physics Letters |
| Volume: | 94 |
| Issue: | 18 |
| Start Page: | 182502 |
| Publisher DOI: | 10.1063/1.3130092 |
| Abstract: | Magnetic and transport properties of a fully epitaxial CoFe/n-GaAs junction were investigated. The CoFe film grown on the GaAs showed strong magnetic anisotropy in which uniaxial anisotropy with an easy axis of [11^^-0] dominated with a slight cubic anisotropy having easy axes of [110] and [11^^-0] superimposed. Tunneling anisotropic magnetoresistance (TAMR) was observed at 4.2 K in the CoFe/n-GaAs junction. Angular dependence of the tunnel resistance showed uniaxial-type anisotropic tunnel resistance between the [110] and [11^^-0] directions in the (001) plane that varied strongly with a bias voltage. The observed TAMR effect can be explained by the anisotropic electronic structure due to Rashba and Dresselhaus spin-orbit interactions. (c) 2009 American Institute of Physics. |
| Rights: | Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in ,Appl. Phys. Lett. 94, 182502 (2009), and may be found at https://dx.doi.org/10.1063/1.3130092 |
| Type: | article |
| URI: | http://hdl.handle.net/2115/38547 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 植村 哲也
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