Fully filling-controlled pyrochlore ruthenates: emergent ferromagnetic-metal state and geometrical Hall effect

Fully filling-controlled pyrochlore ruthenates: emergent ferromagnetic-metal state and geometrical Hall effect

Carrier doping to the Mott insulator is essential to produce highly correlated metals with emergent properties. Pyrochlore ruthenates, Pr\(_{2}\)Ru\(_{2}\)O\(_{7}\) (Ru-\(4d\) electron number, \(n=4\)) and Ca\(_{2}\)Ru\(_{2}\)O\(_{7}\) (\(n=3\)), are a Mott insulator and a magnetic bad metal, respec...

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Veröffentlicht in:arXiv.org 2021-03
Hauptverfasser: Kaneko, Ryoma, Ueda, Kentaro, Sakai, Shiro, Nomura, Yusuke, Huebsch, Marie-Therese, Arita, Ryotaro, Tokura, Yoshinori
Format: Artikel
Sprache:eng
Schlagworte:
Calcium
Doping
Ferromagnetism
Hall effect
Magnetic properties
Phase transitions
Physics - Strongly Correlated Electrons
Transport properties
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Zusammenfassung:Carrier doping to the Mott insulator is essential to produce highly correlated metals with emergent properties. Pyrochlore ruthenates, Pr\(_{2}\)Ru\(_{2}\)O\(_{7}\) (Ru-\(4d\) electron number, \(n=4\)) and Ca\(_{2}\)Ru\(_{2}\)O\(_{7}\) (\(n=3\)), are a Mott insulator and a magnetic bad metal, respectively, due to the strong electron correlation. We investigate magneto-transport properties of (Pr\(_{1-x}\)Ca\(_{x}\))\(_{2}\)Ru\(_{2}\)O\(_{7}\) in a whole band-filling range, \(0
ISSN:2331-8422
DOI:10.48550/arxiv.2103.04360