Exotic Magnetism in Perovskite KOsO3

Jie Chen; Hongze Li; Javier Gainza; Angel Muñoz; Jose A. Alonso; Jue Liu; Yu Sheng Chen; Alexei A. Belik; Kazunari Yamaura; Jiaming He; Xinyu Li; John B. Goodenough; J. S. Zhou

doi:10.1103/PhysRevLett.132.156701

Exotic Magnetism in Perovskite KOsO3

Jie Chen, Hongze Li, Javier Gainza, Angel Muñoz, Jose A. Alonso, Jue Liu, Yu Sheng Chen, Alexei A. Belik, Kazunari Yamaura, Jiaming He, Xinyu Li, John B. Goodenough, J. S. Zhou

Powder Diffraction

Research output: Contribution to journal › Article › peer-review

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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 wave function 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.

Original language	English
Article number	156701
Journal	Physical Review Letters
Volume	132
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.132.156701
State	Published - Apr 12 2024

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10.1103/PhysRevLett.132.156701

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title = "Exotic Magnetism in Perovskite KOsO3",

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 wave function 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.",

author = "Jie Chen and Hongze Li and Javier Gainza and Angel Mu{\~n}oz and Alonso, {Jose A.} and Jue Liu and Chen, {Yu Sheng} and Belik, {Alexei A.} and Kazunari Yamaura and Jiaming He and Xinyu Li and Goodenough, {John B.} and Zhou, {J. S.}",

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doi = "10.1103/PhysRevLett.132.156701",

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T1 - Exotic Magnetism in Perovskite KOsO3

AU - Chen, Jie

AU - Li, Hongze

AU - Gainza, Javier

AU - Muñoz, Angel

AU - Alonso, Jose A.

AU - Liu, Jue

AU - Chen, Yu Sheng

AU - Belik, Alexei A.

AU - Yamaura, Kazunari

AU - He, Jiaming

AU - Li, Xinyu

AU - Goodenough, John B.

AU - Zhou, J. S.

PY - 2024/4/12

Y1 - 2024/4/12

N2 - 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 wave function 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.

AB - 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 wave function 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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VL - 132

JO - Physical Review Letters

JF - Physical Review Letters

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Exotic Magnetism in Perovskite KOsO3

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