Experimental Realization of Spin-1/2 Triangular-Lattice Heisenberg Antiferromagnet
Preprint
- 18 October 2011
Abstract
We report the results of magnetization and specific heat measurements on Ba$_3$CoSb$_2$O$_9$, in which the magnetic Co$^{2+}$ ion has a fictitious spin-1/2, and show evidence that a spin-1/2 Heisenberg antiferromagnet on a regular triangular lattice is actually realized in Ba$_3$CoSb$_2$O$_9$. We found that the entire magnetization curve including the one-third quantum magnetization plateau is in excellent agreement with theoretical calculations at a quantitative level.Keywords
All Related Versions
- Version 1, 2011-10-18, ArXiv
- Published version: Physical Review Letters, 108 (5), 057205.
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