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arXiv · 1710.07174

Ultrahigh Magnetic Field Phases in Frustrated Triangular-lattice Magnet CuCrO$_2$

Atsuhiko Miyata·Oliver Portugall·Daisuke Nakamura·Kenya Ohgushi·Shojiro Takeyama
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Abstract

The magnetic phases of a triangular-lattice antiferromagnet, CuCrO$_2$, were investigated in magnetic fields along to the $c$ axis, $H$ // [001], up to 120 T. Faraday rotation and magneto-absorption 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 are 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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Atsuhiko Miyata, Oliver Portugall, Daisuke Nakamura, Kenya Ohgushi, Shojiro Takeyama. 2017-10-19. Ultrahigh Magnetic Field Phases in Frustrated Triangular-lattice Magnet CuCrO$_2$. https://doi.org/10.1103/physrevb.96.180401

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