AVS 64th International Symposium & Exhibition
    Scanning Probe Microscopy Focus Topic Monday Sessions
       Session SP+2D+AS+NS+SS-MoA

Paper SP+2D+AS+NS+SS-MoA10
The Difference between Electron and Hole Dopant of Magnetic Element to the Superconductivity in BaFe2As2

Monday, October 30, 2017, 4:40 pm, Room 10

Session: Probing Electronic and Transport Properties
Presenter: Qiang Zou, Oak Ridge National Laboratory
Authors: Q. Zou, Oak Ridge National Laboratory
L. Li, Oak Ridge National Laboratory
A. Sefat, Oak Ridge National Laboratory
D.S. Parker, Oak Ridge National Laboratory
Z. Gai, Oak Ridge National Laboratory
Correspondent: Click to Email

The effect of magnetism and spin excitation in the Fe-based superconductors (FeSC) is crucial to understand their superconductivity. Both electron-(Ni) and hole-(Cr) dopant of magnetic elements could lead to suppression of the magnetic/structural phase transition in BaFe2As2. However, the Cr doped BaFe2As2 doesn’t show the superconductivity. Using scanning tunneling microscopy/spectroscopy, here, we compared the electronic properties of BaFe2-xNixAs2 and BaFe2-xCrxAs2 at various temperatures. Our results will shed the light on the microscopic understanding of relation between the superconductivity and magnetism in the FeSC. This research was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility.