Magnetic-circular-dichroism study of heavy- and light-hole g factors in InxGa1-xAs/InP quantum wells

被引：24

作者：

Hofmann, DM ^{[1
]}

Oettinger, K ^{[1
]}

Efros, AL ^{[1
]}

Meyer, BK ^{[1
]}

机构：

[1] USN, RES LAB, NANOSTRUCT OPT SECT, WASHINGTON, DC 20357 USA

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.55.9924

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Intersubband transitions in InxGa1-xAs/InP quantum wells have been studied by magnetic circular dichroism (MCD) of the absorption. The g values of the heavy and light holes in the different subbands are deduced from the intensity dependence of the MCD signals on the applied magnetic field: g(hhI)* = -0.68+/-0.1, g(hh2)* = -1.81+/-0.4, and g(Ih1)* = 8.87+/-1.2. These results are in good agreement with effective-mass-theory calculations and allow one to estimate the in-plane effective masses of the second heavy-hole (m(hh2)* = 0.85m(0)) and the first light-hole (m(1h1)* = 0.17m(0)) subbands. An observed increase of the half-width of the subband transitions with increasing transition energy and increasing magnetic field is qualitatively explained by statistical fluctuations of the quantum-well width.

引用

页码：9924 / 9928

页数：5

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