Article Exotic magnetism in perovskite KOsO3

Jie Chen (The University of Texas at Austin) ; Hongze Li (The University of Texas at Austin) ; Javier Gainza (Instituto de Ciencia de Materiales de Madrid) ; Angel Munoz (Universidad Carlos III) ; Jose A. Alonso (Instituto de Ciencia de Materiales de Madrid) ; Jue Liu (Oak Ridge National Laboratory (ORNL)) ; Yu-Sheng Chen (University of Chicago) ; ベリック アレクセイ SAMURAI ORCID (Research Center for Materials Nanoarchitectonics (MANA)/Quantum Materials Field/Quantum Solid State Materials Group, National Institute for Materials ScienceROR) ; 山浦 一成 SAMURAI ORCID (Research Center for Materials Nanoarchitectonics (MANA)/Quantum Materials Field/Quantum Solid State Materials Group, National Institute for Materials ScienceROR) ; Jiaming He (The University of Texas at Austin) ; Xinyu Li (The University of Texas at Austin) ; John B. Goodenough (The University of Texas at Austin) ; J.-S. Zhou

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Jie Chen, Hongze Li, Javier Gainza, Angel Munoz, Jose A. Alonso, Jue Liu, Yu-Sheng Chen, ベリック アレクセイ, 山浦 一成, Jiaming He, Xinyu Li, John B. Goodenough, J.-S. Zhou. Exotic magnetism in perovskite KOsO3. PHYSICAL REVIEW LETTERS. 2024, 132 (), 156701-156701. https://doi.org/10.1103/PhysRevLett.132.156701
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(abstract)

A new perovskite KOsO3 has been stabilized under high-pressure and high-temperature conditions. It is cubic at 500 K (Pm-3m) and undergoes subsequent phase transitions to tetragonal at 320 K (P4/mmm) and rhombohedral (R-3m) at 230 K as shown from refining synchrotron X-ray powder diffraction (SXRD) data. The larger orbital overlap integral and the extended wavefunction of 5d electrons in the perovskite KOsO3 allow to explore physics from the regime where Mott and Hund’s rule couplings dominate to the state where the multiple interactions are on equal footing. We demonstrate an exotic magnetic ordering phase found by neutron powder diffraction along with physical properties via a suite of measurements including magnetic and transport properties, differential scanning calorimetry, and specific heat, which provide comprehensive information for a system at the crossover from localized to itinerant electronic behavior.

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Keyword: KOsO3

Date published: 2024-04-09

Publisher: American Physical Society

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  • PHYSICAL REVIEW LETTERS (ISSN: 00319007) vol. 132 p. 156701-156701

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Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.1103/PhysRevLett.132.156701

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Updated at: 2024-04-10 16:30:15 +0900

Published on MDR: 2024-04-10 16:30:15 +0900

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