Asgari, R.Gokmen, T.Tanatar, BilalPadmanabhan, M.Shayegan, M.2016-02-082016-02-0820091098-0121http://hdl.handle.net/11693/22718We 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.EnglishArticle10.1103/PhysRevB.79.235324