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arXiv 1111.2432cond-mat.mes-hallcond-mat.str-el
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强磁场下准二维化合物层间电导率的指数抑制

Exponential suppression of interlayer conductivity in very anisotropic quasi-two-dimensional compounds in high magnetic field

Pavel D. Grigoriev

摘要:

结果表明,在较强的磁场中,层间电子电导率受到库仑势垒的指数衰减,库仑势垒是由每个局域电子态周围极化子的形成引起的。建立了描述这种效应的理论模型,并计算了层间磁电阻的温度和磁场依赖性。所得结果与GaAs/AlGaAs异质结和强各向异性有机金属中的实验数据符合得很好。提出的理论允许使用层间磁电阻的实验来研究电子状态,由磁场和无序局域化。

英文摘要:

It is shown that in rather strong magnetic field the interlayer electron conductivity is exponentially damped by the Coulomb barrier arising from the formation of polaron around each localized electron state. The theoretical model is developed to describe this effect, and the calculation of the temperature and field dependence of interlayer magnetoresistance is performed. The results obtained agree well with the experimental data in GaAs/AlGaAs heterostructures and in strongly anisotropic organic metals. The proposed theory allows to use the experiments on interlayer magnetoresistance to investigate the electron states, localized by magnetic field and disorder.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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