“School of Physics”
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| Paper IPM / P / 9530 |
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| Abstract: | |||||||||||
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We present numerical calculations of the electron effective mass in
an interacting, ferromagnetic, two-dimensional electron system. We
consider quantum interaction effects associated with the
charge-density fluctuation induced many-body vertex corrections. Our
theory, which is free of adjustable parameters, reveals that the
effective mass is suppressed (relative to its band value) in the
strong coupling limit, in good agreement with the results of recent
experimental measurements.
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