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

Atsuhiko Miyata, Oliver Portugall, Daisuke Nakamura, Kenya Ohgushi, and Shojiro Takeyama
Phys. Rev. B 96, 180401(R) – Published 1 November 2017

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.

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  • Received 4 September 2017

DOI:https://doi.org/10.1103/PhysRevB.96.180401

©2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Atsuhiko Miyata and Oliver Portugall

  • Laboratoire National des Champs Magnetiques Intenses, CNRS-UGA-UPS-INSA, 143 Avenue de Rangueil, Toulouse 31400, France

Daisuke Nakamura, Kenya Ohgushi*, and Shojiro Takeyama

  • Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan

  • *Present address: Department of Physics, Tohoku University, 980-8578 Miyagi, Japan.
  • takeyama@issp.u-tokyo.ac.jp

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Issue

Vol. 96, Iss. 18 — 1 November 2017

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