@article{oai:iwate-u.repo.nii.ac.jp:00014046,
 author = {Suzuki, Nobuo and Matsubara, Fumitaka and Fujiki, Sumiyoshi and Shirakura, Takayuki},
 issue = {18},
 journal = {PHYSICAL REVIEW B},
 month = {Nov},
 note = {We study the quantum phase transition of an S=1/2 anisotropic α (≡Jz/Jxy) Heisenberg antiferromagnet on a triangular lattice. We calculate the sublattice magnetization and the long-range helical order parameter and their Binder ratios on finite systems with N≤36 sites. The N dependence of the Binder ratios reveals that the classical 120∘ Néel state occurs for α≲0.55, whereas a critical collinear state occurs for 1/α≲0.6. This result is at odds with a widely held belief that the ground state of a Heisenberg antiferromagnet is the 120∘ Néel state, but it also provides a possible mechanism explaining experimentally observed spin liquids.},
 pages = {184414-1--184414-4},
 title = {Absence of classical long-range order in an S=1/2 Heisenberg antiferromagnet on a triangular lattice},
 volume = {90},
 year = {2014}
}