Exotic physical properties in metallic perovskite LaRuO3: Strong evidence for Hund metal

Li, Z. Y.; Li, X. Y.; He, J. M.; McGuire, Michael A.; Aczel, Adam A.; Alonso, J. A.; Fernandez-Diaz, M. T.; Zhou, J. -S.

doi:10.1103/physrevb.106.l081104

Title: Exotic physical properties in metallic perovskite LaRuO₃: Strong evidence for Hund metal

Journal Article · 07 August 2022 · Physical Review. B

DOI: https://doi.org/10.1103/physrevb.106.l081104 · OSTI ID:1887646

Li, Z. Y. ^[1];

^[1];

^[1]; McGuire, Michael A. ^[2]; Aczel, Adam A. ^[2]; Alonso, J. A. ^[3]; Fernandez-Diaz, M. T. ^[4];

^[1]

Univ. of Texas, Austin, TX (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (Spain)
Inst. Laue-Langevin (ILL), Grenoble (France)

The Hund's coupling rule is of fundamental importance in atomic physics. It also plays a key role in the determination of physical properties in strongly correlated electron systems where the Fermi energy lies in multiple bands. Here we report a thorough investigation of a rarely studied 4d perovskite oxide LaRuO₃ by a suite of measurements including transport, magnetization, specific heat, thermoelectric power, thermal conductivity, and neutron and x-ray diffraction. Our results are consistent with theoretical predictions, which makes LaRuO₃ an exemplary Hund metal.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1887646

Journal Information:: Physical Review. B, Journal Name: Physical Review. B Journal Issue: 8 Vol. 106; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Title: Exotic physical properties in metallic perovskite LaRuO₃: Strong evidence for Hund metal