Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-05-23
J. Phys. Soc. Jpn. 80, 074709 (2011)
Physics
Condensed Matter
Strongly Correlated Electrons
13 pages, 6 figures, accepted for publication in JPSJ
Scientific paper
10.1143/JPSJ.80.074709
The Faraday rotation technique is used to map out the finite-temperature phase diagram of the prototypical frustrated magnet ZnCr2O4, in magnetic fields of up to 190 T generated by the single-turn coil method. We find evidence for a number of magnetic phase transitions, which are well-described by the theory based on spin-lattice coupling. In addition to the 1/2 plateau and a 3:1 canted phase, a 2:1:1 canted phase is found for the first time in chromium spinel oxides, which has been predicted by a theory of Penc et al. to realize in a small spin-lattice coupling limit. Both the new 2:1:1 and the 3:1 phase are regarded as the supersolid phases according to a magnetic analogy of Matsuda and Tsuneto, and Liu and Fisher.
Miyata Atsuhiko
Motome Yukitoshi
Penc Karlo
Shannon Nic
Takeyama Shojiro
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