The magnetic phases of a triangular-lattice antiferromagnet, CuCrO2, 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.
@article{arxiv.1710.07174,
title = {Ultrahigh Magnetic Field Phases in Frustrated Triangular-lattice Magnet CuCrO$_2$},
author = {Atsuhiko Miyata and Oliver Portugall and Daisuke Nakamura and Kenya Ohgushi and Shojiro Takeyama},
journal= {arXiv preprint arXiv:1710.07174},
year = {2017}
}
Comments
5 pages, 4 figures, accepted for publication as a Rapid Communication in Physical Review B