Magnetoexciton dispersion in graphene bilayers embedded in a dielectric
Magnetoexciton dispersion in graphene bilayers embedded in a dielectric
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嵌入电介质中的石墨烯双层中的磁激子色散
DOI：
10.1103/physrevb.79.073409
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发表时间：
2009
影响因子：
3.7
通讯作者：
["Z. Koinov
中科院分区：
文献类型：
--
作者：
["Z. Koinov
研究了介电介质中石墨烯双分子层的磁激子结合能。这些计算是基于相对论的贝特-萨尔皮特方程，假设在最低朗道能级近似发生的强磁场区。结果表明，在石墨烯双层结构中，磁激子质量（结合能）比具有抛物色散的耦合量子阱中相应的磁激子质量（结合能）低（高）4倍。
A study of the magnetoexciton binding energy in graphene bilayers embedded in a dielectric is presented. The calculations are based on the relativistic Bethe-Salpeter equation assuming a strong magnetic field regime where the lowest Landau-level approximation takes place. It is shown that in graphene bilayer structures the magnetoexciton mass (binding energy) is four times lower (higher) than the corresponding magnetoexciton mass (binding energy) in coupled quantum wells with parabolic dispersion.