A shift of the phase diagram in BaFe2(As1- x Px)2 by controlled disorder
Abstract
The relationship between unconventional superconductivity and quantum critical point (QCP) is one of the most important issues in strongly correlated electron systems. A systematic study on the impurity scattering is performed in iron-based superconductor BaFe2(As1- x Px)2 , in which clear evidence for QCP has recently been presented. We introduce point defects into BaFe2(As1- x Px)2 by electron irradiation, which has less effects on lattice constant and carrier density compared to the chemical substitution of atoms. Here, we report on the changes of the magnetic and superconducting transition temperatures with electron irradiation in a wide range of substitution, from which we discuss the effect of impurity scattering on superconducting dome and QCP.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- 2016
- Bibcode:
- 2016APS..MAR.R5002M