Theory for the cyclotron resonance of holes in strained asymmetric Ge-SiGe quantum wells

被引：62

作者：

Winkler, R ^{[1
]}

Merkler, M ^{[1
]}

Darnhofer, T ^{[1
]}

Rossler, U ^{[1
]}

机构：

[1] UNIV REGENSBURG,DEPT THEORET PHYS,D-93040 REGENSBURG,GERMANY

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.53.10858

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present calculations of hole Landau levels, cyclotron masses, acid far-infrared spectra for strained asymmetric p-type Ge-SixCe1-x quantum wells in a perpendicular magnetic field in order to interpret recent experimental results by Engelhardt et al. [Solid State Electron. 37, 949 (1994)]. Self-consistent hole subband calculations are combined with calculations of the Landau levels using a 6 x 6 k . p Hamiltonian for the topmost Gamma(8) and Gamma(7) bulk valence bands. Our results are in very good agreement with the experimental data. Taking into account the coupling to the split-off band turns out to be important. The complex spectra of hole Landau levels in strained quantum wells remind one of the well known quantum resonance spectra of bulk p-type Ge under uniaxial stress.

引用

页码：10858 / 10865

页数：8

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