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首页> 外文期刊>Physica, B. Condensed Matter >Anomalous Shubnikov-de Haas oscillations in two-dimensional systems
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Anomalous Shubnikov-de Haas oscillations in two-dimensional systems

机译:二维系统中的Shubnikov-de Haas异常振动

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Shubnikov-de Haas (SdH) oscillations have long been used to measure the unequal spin-subband densities of inversion asymmetric two-dimensional (2D) systems. Our experiments and self-consistent numerical calculations for 2D GaAs hole systems indicate that, in general, these oscillations are not simply related to the population of spin-split subbands at zero-magnetic-field The SdH oscillations depend sensitively on the crystallographic growth directions of a semiconductor quantum well. Our quantum mechanical analysis reveals the inapplicability of conventional Bohr-Sommerfeld quantization for systems with spin-orbit interaction. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 22]
机译:Shubnikov-de Haas(SdH)振荡长期以来一直用于测量反演非对称二维(2D)系统的不等自旋子带密度。我们的实验和二维GaAs空穴系统的自洽数值计算表明,一般而言,这些振荡不仅仅与零磁场下自旋分裂子带的数量有关.SdH振荡敏感地取决于晶体的晶体生长方向半导体量子阱。我们的量子力学分析揭示了传统的Bohr-Sommerfeld量化不适用于具有自旋轨道相互作用的系统。 (C)2001 Elsevier Science B.V.保留所有权利。 [参考:22]

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