Photoemission and core-level magnetic circular dichroism studies of diluted magnetic semiconductors

被引：5

作者：

Fujimori, A

Okabayashi, J

Takeda, Y

Mizokawa, T

Okamoto, J

Mamiya, K

Saitoh, Y

Muramatsu, Y

Oshima, M

Ohya, S

Tanaka, A

机构：

[1] Univ Tokyo, Dept Complex Sci & Engn, Kashiwa, Chiba 2778561, Japan

[2] Japan Atom Energy Res Inst, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan

[3] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan

[4] High Energy Accelerator Res Org, IMSS, Photon Factory, Tsukuba, Ibaraki 305, Japan

[5] Univ Tokyo, Dept Elect Engn, Bunkyo Ku, Tokyo 1138656, Japan

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2005年 / 144卷

关键词：

diluted magnetic semiconductors; photoemission; magnetic circular dichroism;

D O I：

10.1016/j.elspec.2005.01.212

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

An overview is given on the photoemission studies of the electronic structure of diluted magnetic semiconductors (DMS's), in particular of the prototypical ferromagnetic DMS Ga1-xMnxAs. Configuration-interaction cluster-model analyses of the photoemission data allow us to estimate the p-d exchange coupling constant and hence to predict how to increase the Curie temperature in new materials. Spectra near the Fermi level combined with the transport and optical properties suggest a highly incoherent metallic state for the ferromagnetic metallic phase. It is shown that new insight into the chemically and magnetically inhomogeneous states of DMS's can be gained by the temperature and magnetic field dependence of core-level magnetic circular dichroism signals. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：701 / 705

页数：5

共 31 条

[1] Ferromagnetism and its stability in the diluted magnetic semiconductor (In,Mn)As [J].