Ishida, Y. ; Sarma, D. D. ; Okazaki, K. ; Okabayashi, J. ; Hwang, J. I. ; Ott, H. ; Fujimori, A. ; Medvedkin, G. A. ; Ishibashi, T. ; Sato, K. (2003) In situ photoemission study of the room temperature ferromagnet ZnGeP2:Mn Physical Review Letters, 91 (10). 107202_1-107202_4. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v91/i10/e107202
Related URL: http://dx.doi.org/10.1103/PhysRevLett.91.107202
Abstract
The chemical states of the ZnGeP2:Mn interface which shows ferromagnetism above room temperature have been studied by photoemission spectroscopy. Mn deposition on the ZnGeP2 substrate heated to 400 °C induced Mn substitution for Zn and then the formation of metallic Mn-Ge-P compounds. Depth profile studies have shown that Mn 3d electrons changed their character from itinerant to localized along the depth, and in the deep region, dilute divalent Mn species ( < 5% Mn) was observed with a coexisting metallic Fermi edge of non-Mn 3d character. The possibility of hole doping through Mn substitution for Ge and/or Zn vacancy is discussed.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 46311 |
| Deposited On: | 04 Jul 2011 06:57 |
| Last Modified: | 18 May 2016 02:14 |
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