Polaron effective mass.
Polaron effective mass.
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极化子有效质量。
DOI:
10.1103/physrevb.37.3085
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发表时间:
1988
期刊:
影响因子:
--
通讯作者:
Lawande
中科院分区:
文献类型:
--
作者:
Khandekar;Bhagwat;Lawande
Adequacy of various definitions of polaron effective mass ${m}^{\mathrm{*}}$ is examined. The expression for ${m}^{\mathrm{*}}$ obtained by using the zero-temperature kernel is compared with the zero-temperature limit of the temperature-dependent effective mass obtained by employing the finite-temperature kernel. We find that consistent results are obtained when Saitoh's definition is employed. Our calculations are illustrated for a simple case of weak electron-phonon interaction.