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Abstract: We present numerical calculations of the electron effective mass in aninteracting, ferromagnetic, two-dimensional electron system. We considerquantum interaction effects associated with the charge-density fluctuationinduced many-body vertex corrections. Our theory, which is free of adjustableparameters, reveals that the effective mass is suppressed relative to its bandvalue in the strong coupling limit, in good agreement with the results ofrecent experimental measurements.



Autor: Reza Asgari, T. Gokmen, B. Tanatar, Medini Padmanabhan, M. Shayegan

Fuente: https://arxiv.org/







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