Magnetic Orders in the Pnictides and the Impact of Spin-Orbit Coupling

Magnetic Orders in the Pnictides and the Impact of Spin-Orbit Coupling

Mar 22, 2018 - 4:10 PM
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Speaker: Morten H. Christensen (Univ Minnesota)

Title: Magnetic Orders in the Pnictides and the Impact of Spin-Orbit Coupling

The iron pnictides represent a new family of unconventional superconductors in which superconductivity appears in close proximity to a magnetically ordered phase. In this talk I will review the magnetic order of the iron pnictides and discuss recent discoveries in the magnetic phase diagram, focusing on the reorientation observed to occur in hole-doped compounds.
I will show that the observed magnetic order can be reproduced using mean-field theory. Considering the impact of magnetic fluctuations on the phase diagram I will argue that spin-orbit coupling has a qualitative impact and even the modest spin-orbit coupling observed in the pnictides cannot be neglected.