Bulletin of the American Physical Society
APS March Meeting 2010
Volume 55, Number 2
Monday–Friday, March 15–19, 2010; Portland, Oregon
Session D39: Focus Session: Iron Based Superconductors: Theory I
2:30 PM–5:30 PM,
Monday, March 15, 2010
Sponsoring Units: DCMP DMP
Chair: Igor Mazin, Navel Research Laboratory
Abstract ID: BAPS.2010.MAR.D39.9
Abstract: D39.00009 : Spin-density-wave and superconductivity in iron-pnictide based superconductors*
4:30 PM–4:42 PM
Preview Abstract Abstract
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, Texas 77204)
We study theoretically the coexistence of the spin-density-wave (SDW) and superconductivity in electron-doped iron-pnictide superconductors based on the two orbital model and Bogoliubov- de Gennes equations. The phase diagram is mapped out and the evolution of the Fermi surface as the doping varies is presented. The local density of states has also been calculated from low to high doping. We show that the strength of the superconducting coherent peak at the positive energy gets enhanced and the one at the negative energy is suppressed by the SDW order in the underdoped region. Several features of our results are in good agreement with the experiments.
*This work was supported by the Texas Center for Superconductivity at the University of Houston and by the Robert A.Welch Foundation under the Grant No. E-1146.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.D39.9
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