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Exceptional Ising Magnetic Behavior of Itinerant Spin-polarized Carriers in URu2Si2

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arxiv 1405.1631 v1 pith:ULT3J55T submitted 2014-05-07 cond-mat.str-el

Miroslaw Werwinski , Jan Rusz , John A. Mydosh , Peter M. Oppeneer This is my paper · ORCID
classification cond-mat.str-el
keywords isingbehaviorelectronicitinerantmagneticstructureanalyzedanisotropy
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abstract

We show on the basis of electronic structure calculations that the uranium 5$f$ magnetic moment in URu$_2$Si$_2$ exhibits a unique Ising behavior, which surprisingly, arises from itinerant electronic states. The origin of the unusual Ising behavior is analyzed as due to the peculiar near-Fermi edge nested electronic structure of URu$_2$Si$_2$ involving its strong spin-orbit interaction. The Ising anisotropy has pertinent implications for theories applicable to explaining the Hidden Order phase in URu$_2$Si$_2$.

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