Session W13: Focus Session: Iron Pnictides and Other Novel Superconductors XIV: ARPES

11:15 AM–2:03 PM, Thursday, March 19, 2009
Room: 309

Sponsoring Unit: DCMP
Chair: Norman Mannella, University of Tennessee, Knoxville

Abstract ID: BAPS.2009.MAR.W13.1

Abstract: W13.00001 : Electronic structure of electron doped BaAs$_{2}$Fe$_{2}$ superconductors revealed by Angle Resolved Photoemission

11:15 AM–11:27 AM

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Authors:

  P. Vilmercati
  I. Vobornik
  M. Unnikrishnan
  A. Fedorov
  A. Goldoni
  G. Panaccione
  A. Safa-Sefat
  R. Jin
  M.A. McGuire
  B.C. Sales
  D.J. Singh
  D. Mandrus
  N. Mannella

The electronic structure in the normal state of Co-doped BaAs$_{2}$Fe$_{2}$ superconductors has been measured by Angle Resolved photoemission (ARPES). Co doping on the Fe site results in electron doping [A. S. Sefat et al., Phys. Rev. Lett. 101, 117004 (2008)]. The data qualitatively reveal that Co-doping results in raising the chemical potential, as expected with electron doping. The Fermi surface topology and the possible relevance to the mechanism of spin fluctuation will also be discussed.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2009.MAR.W13.1