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arXiv 1005.3247cond-mat.mes-hall
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低温下库仑关联对量子阱子带间吸收的影响

Influence of Coulomb correlations on the quantum well intersubband absorption at low temperatures

Thi Uyen-Khanh Dang, Carsten Weber, Marten Richter, Andreas Knorr

摘要:

本文提出了掺杂GaAs/ Al_{35} Ga_{65} As量子阱系统中包含电子基态关联的子带间吸收理论。研究了低温下载流子间的库仑相互作用对吸收谱的影响,发现基态关联使吸收谱的重正化和谱宽增加。在T = 1 K时,它的半高全宽增加到3倍。包含电子-声子散射强烈地降低了电子相关性的相对影响。

英文摘要:

We present a theory for the intersubband absorption including electronic ground state correlations in a doped GaAs/Al_{35}Ga_{65}As quantum well system. Focusing on the influence of the Coulomb interaction among the carriers at low temperatures, we find that the ground state correlations lead to an increased renormalization and spectral broadening of the absorption spectrum. At T = 1 K, its full width at half maximum is increased by up to a factor 3. The inclusion of electron-phonon scattering strongly reduces the relative impact of the electronic correlations.

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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