MAGNETOOPTICAL SPECTRUM OF DONORS IN ALXGA1-XAS AND ITS IMPLICATIONS ON THE DX-CENTER

被引：3

作者：

INOSHITA, T ^{[1
]}

IWATA, N ^{[1
]}

机构：

[1] NEC CORP LTD,MICROELECTR RES LABS,MIYAMAE KU,KAWASAKI,KANAGAWA 213,JAPAN

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.42.1296

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The 1s-2p intracenter optical transitions of shallow donors in n-type AlxGa1-xAs (x=0.18 and 0.24) were investigated by far-infrared photoconductivity in magnetic fields of up to 10 T. The spectra could be well fitted by the hydrogenic effective-mass model, and were analyzed in terms of the effective mass m* and the linewidth. The result indicates (1) the inadequacy of the usual linear interpolation scheme for m*(x) and (2) the importance of alloy disorder in line broadening. No evidence was seen for the interaction of the shallow-donor ground state with the DX center, which is inconsistent with the model based on the DX center being an A1 state with small lattice relaxation. © 1990 The American Physical Society.

引用

页码：1296 / 1304

页数：9

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