Ultrahigh magnetic field phases in the frustrated triangular-lattice magnet CuCrO2

Atsuhiko Miyata; Oliver Portugall; Daisuke Nakamura; Kenya Ohgushi; Shojiro Takeyama

doi:10.1103/PhysRevB.96.180401

Ultrahigh magnetic field phases in the frustrated triangular-lattice magnet CuCrO2

Atsuhiko Miyata, Oliver Portugall, Daisuke Nakamura, Kenya Ohgushi, Shojiro Takeyama

SCI - Physics

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

10 Citations (Scopus)

Abstract

The magnetic phases of a triangular-lattice antiferromagnet CuCrO2 were investigated in magnetic fields along the c axis, H [001], up to 120 T. Faraday rotation and magnetoabsorption spectroscopy were used to unveil the rich physics of magnetic phases. An up-up-down (UUD) magnetic structure phase was observed around 90-105 T at temperatures around 10 K. Additional distinct anomalies adjacent to the UUD phase were uncovered and the Y-shaped and the V-shaped phases are proposed to be viable candidates. These ordered phases emerged as a result of the interplay of geometrical spin frustration, single-ion anisotropy, and thermal fluctuations in an environment of extremely high magnetic fields.

Original language	English
Article number	180401
Journal	Physical Review B
Volume	96
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.96.180401
Publication status	Published - 2017 Nov 1

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10.1103/PhysRevB.96.180401

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title = "Ultrahigh magnetic field phases in the frustrated triangular-lattice magnet CuCrO2",

abstract = "The magnetic phases of a triangular-lattice antiferromagnet CuCrO2 were investigated in magnetic fields along the c axis, H [001], up to 120 T. Faraday rotation and magnetoabsorption spectroscopy were used to unveil the rich physics of magnetic phases. An up-up-down (UUD) magnetic structure phase was observed around 90-105 T at temperatures around 10 K. Additional distinct anomalies adjacent to the UUD phase were uncovered and the Y-shaped and the V-shaped phases are proposed to be viable candidates. These ordered phases emerged as a result of the interplay of geometrical spin frustration, single-ion anisotropy, and thermal fluctuations in an environment of extremely high magnetic fields.",

author = "Atsuhiko Miyata and Oliver Portugall and Daisuke Nakamura and Kenya Ohgushi and Shojiro Takeyama",

note = "Funding Information: We acknowledge Masayuki Hagiwara and Hironori Yamaguchi for sending their magnetization data which is shown in Fig. , and Kenta Kimura and Masashi Tokunaga for their helpful assistance in growing the samples. A.M. is thankful for the support of the Grant-in-Aid for the Japan Society for the Promotion of Science (JSPS) Fellows. Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

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AU - Takeyama, Shojiro

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N2 - The magnetic phases of a triangular-lattice antiferromagnet CuCrO2 were investigated in magnetic fields along the c axis, H [001], up to 120 T. Faraday rotation and magnetoabsorption spectroscopy were used to unveil the rich physics of magnetic phases. An up-up-down (UUD) magnetic structure phase was observed around 90-105 T at temperatures around 10 K. Additional distinct anomalies adjacent to the UUD phase were uncovered and the Y-shaped and the V-shaped phases are proposed to be viable candidates. These ordered phases emerged as a result of the interplay of geometrical spin frustration, single-ion anisotropy, and thermal fluctuations in an environment of extremely high magnetic fields.

AB - The magnetic phases of a triangular-lattice antiferromagnet CuCrO2 were investigated in magnetic fields along the c axis, H [001], up to 120 T. Faraday rotation and magnetoabsorption spectroscopy were used to unveil the rich physics of magnetic phases. An up-up-down (UUD) magnetic structure phase was observed around 90-105 T at temperatures around 10 K. Additional distinct anomalies adjacent to the UUD phase were uncovered and the Y-shaped and the V-shaped phases are proposed to be viable candidates. These ordered phases emerged as a result of the interplay of geometrical spin frustration, single-ion anisotropy, and thermal fluctuations in an environment of extremely high magnetic fields.

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Ultrahigh magnetic field phases in the frustrated triangular-lattice magnet CuCrO2

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