As vacancies as magnetic defects in iron pnictide superconductors
Seminar
Speaker
Konstantin Kikoin, TAU
Date
10/01/2013 - 15:30 - 14:00Add to Calendar
2013-01-10 14:00:00
2013-01-10 15:30:00
As vacancies as magnetic defects in iron pnictide superconductors
Unusual magnetic response of As-deficient iron pnictide LaOFeAs is
discussed. It is shown that As vacancies being nominally non-magnetic
defects induce strong enhancement of paramagnetic response of
nonstoichiometric 1111 iron pnictides. This strong magnetic response
however is not detrimental for superconductivity. The microscopic
theory explaining unconventional properties
of defects in Fe-As planes is based on a generalized Anderson - Wolff
impurity model adapted for multivalley semimetals.
Resnick bld, seminar room
Department of Physics
physics.dept@mail.biu.ac.il
Asia/Jerusalem
public
Place
Resnick bld, seminar room
Abstract
Unusual magnetic response of As-deficient iron pnictide LaOFeAs is
discussed. It is shown that As vacancies being nominally non-magnetic
defects induce strong enhancement of paramagnetic response of
nonstoichiometric 1111 iron pnictides. This strong magnetic response
however is not detrimental for superconductivity. The microscopic
theory explaining unconventional properties
of defects in Fe-As planes is based on a generalized Anderson - Wolff
impurity model adapted for multivalley semimetals.
Last Updated Date : 05/12/2022
