Observation of commensurability oscillations of thermopower in an antidot lattice
Observation of commensurability oscillations of thermopower in an antidot lattice
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解点晶格中热电势可通约振荡的观察
DOI：
10.1134/1.1984030
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
A. Toropov
中科院分区：
文献类型：
--
作者：
A. Pogosov;M. Budantsev;R. A. Lavrov;A. Plotnikov;A. Bakarov;A. Toropov
观察到方形解点晶格中热电势的可通约性振荡。这些振荡归因于磁场中经典电子运动的几何共振，并且比相应的磁阻振荡更加明显。热电张量的非对角分量（能斯特-埃廷斯豪森效应）在共振时改变符号。磁阻的附加测量验证了热电测量方法的正确性，并提供了样品中温度分布的信息。
Commensurability oscillations of thermopower in a square antidot lattice are observed. The oscillations are attributed to the geometrical resonances of the classical electron motion in a magnetic field and are much more pronounced than the corresponding magnetoresistance oscillations. The off-diagonal component of the thermopower tensor (the Nernst-Ettingshausen effect) changes sign at resonances. Additional measurements of magnetoresistance verify the correctness of the method used for thermopower measurements and provide information on the temperature distribution in the sample.