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Magnetic moment formation due to arsenic vacancies in LaFeAsO-derived superconductors

Arsenic vacancies in LaFeAsO-derived superconductors are nominally non-magnetic defects. However, we find from a microscopic theory in terms of an appropriately modified Anderson-Wolff model that in their vicinity local magnetic moments form. They can arise because removing an arsenic atom breaks fo...

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Detalles Bibliográficos
Autores principales: Kikoin, Konstantin, Drechsler, Stefan-Ludwig, Koepernik, Klaus, Málek, Jiři, van den Brink, Jeroen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4501002/
https://www.ncbi.nlm.nih.gov/pubmed/26169486
http://dx.doi.org/10.1038/srep11280