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首页> 外文期刊>Physica, B. Condensed Matter >Exchange interaction in degenerate p-type quantum wells
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Exchange interaction in degenerate p-type quantum wells

机译:简并p型量子阱中的交换相互作用

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A detailed comparison between a magneto-transport experiment on a p-type GaAs/AlGaAs quantum well and model calculations is presented. It is shown that for all magnetic fields the Shubnikov-de Haas (SdH) trace is strongly influenced by the exchange interaction, in contrast with n-type structures where this interaction is only important in high magnetic fields. As a consequence, the effective hole masses that are extracted from the temperature dependence of the SdH oscillations are not a good measure of the single-particle hole mass, and can be regarded as meaningless. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 6]
机译:提出了在p型GaAs / AlGaAs量子阱上进行磁传输实验与模型计算的详细比较。结果表明,对于所有磁场,Shubnikov-de Haas(SdH)迹线都受到交换相互作用的强烈影响,这与n型结构相反,后者的相互作用仅在高磁场中很重要。结果,从SdH振荡的温度依赖性中提取的有效空穴质量不是单粒子空穴质量的良好量度,并且可以认为是没有意义的。 (C)1998 Elsevier Science B.V.保留所有权利。 [参考:6]

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