Phys. Rev. B 79, 235324 (2009) [4 pages]Effective mass suppression in a ferromagnetic two-dimensional electron liquidReceived 19 February 2009; published 22 June 2009 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 recent experimental results. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.79.235324
DOI:
10.1103/PhysRevB.79.235324
PACS:
73.20.Mf, 71.10.Ca
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