ChemInform Abstract: Antiferromagnetism in Iron-Based Superconductors: Selection of Magnetic Order and Quasiparticle Interference

ChemInform ◽  
2014 ◽  
Vol 45 (36) ◽  
pp. no-no
Author(s):  
Ilya Eremin ◽  
Johannes Knolle ◽  
Rafael M. Fernandes ◽  
Joerg Schmalian ◽  
Andrey V. Chubukov
Keyword(s):  
Magnetic Order ◽  
Iron Based Superconductors ◽  
Quasiparticle Interference ◽  
Iron Based ◽  
Selection Of

scholarly journals Antiferromagnetism in Iron-Based Superconductors: Selection of Magnetic Order and Quasiparticle Interference

2014 ◽  
Vol 83 (6) ◽  
pp. 061015 ◽  
Author(s):  
Ilya Eremin ◽  
Johannes Knolle ◽  
Rafael M. Fernandes ◽  
Jörg Schmalian ◽  
Andrey V. Chubukov
Keyword(s):  
Magnetic Order ◽  
Iron Based Superconductors ◽  
Quasiparticle Interference ◽  
Iron Based ◽  
Selection Of

scholarly journals Quasiparticle interference in iron-based superconductors

2010 ◽  
Vol 82 (22) ◽  
Author(s):  
A. Akbari ◽  
J. Knolle ◽  
I. Eremin ◽  
R. Moessner
Keyword(s):  
Iron Based Superconductors ◽  
Quasiparticle Interference ◽  
Iron Based

scholarly journals Strong enhancement of magnetic order from bulk to stretched monolayer FeSe as Hund’s metals

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Chang-Youn Moon
Keyword(s):  
Density Functional ◽  
Magnetic Order ◽  
Mean Field Theory ◽  
Mean Field ◽  
Comprehensive Understanding ◽  
Functional Theory ◽  
Iron Based Superconductors ◽  
Magnetic Orders ◽  
Spatial Isolation ◽  
Iron Based

Abstract Despite of the importance of magnetism in possible relation to other key properties in iron-based superconductors, its understanding is still far from complete especially for FeSe systems. On one hand, the origin of the absence of magnetic orders in bulk FeSe is yet to be clarified. On the other hand, it is still not clear how close monolayer FeSe on SrTiO3, with the highest transition temperature among iron-based superconductors, is to a magnetic instability. Here we investigate magnetic properties of bulk and monolayer FeSe using dynamical mean-field theory combined with density-functional theory. We find that suppressed magnetic order in bulk FeSe is associated with the reduction of interorbital charge fluctuations, an effect of Hund’s coupling, enhanced by a larger crystal-field splitting. Meanwhile, spatial isolation of Fe atoms in expanded monolayer FeSe leads into a strong magnetic order, which is completely destroyed by a small electron doping. Our work provides a comprehensive understanding of the magnetic order in iron-based superconductors and other general multi-orbital correlated systems as Hund’s metals.

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