Pairing symmetries of a hole-doped extended two-orbital model for the pnictides

Andrew Nicholson,1,2 Weihao Ge,1,2 José Riera,3 Maria Daghofer,4 Adriana Moreo,1,2 and Elbio Dagotto1,2 1Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Instituto de Fı́sica Rosario, Universidad Nacional de Rosario, 2000-Rosario, Argentina 4IFW Dresden, P.O. Box 27 01 16, DE-01171 Dresden, Germany (Received 3 November 2011; revised manuscript received 10 January 2012; published 24 January 2012)