| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2015-02-06 |
| タイトル |
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タイトル |
Absence of classical long-range order in an S=1/2 Heisenberg antiferromagnet on a triangular lattice |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Suzuki, Nobuo
Matsubara, Fumitaka
Fujiki, Sumiyoshi
Shirakura, Takayuki
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| 著者(機関) |
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値 |
Faculty of Science and Technology, Tohoku Bunka Gakuen University |
| 著者(機関) |
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値 |
Department of Applied Physics, Tohoku University |
| 著者(機関) |
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値 |
Faculty of Science and Technology, Tohoku Bunka Gakuen University |
| 著者(機関) |
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値 |
Faculty of Humanities and Social Sciences, Iwate University |
| 登録日 |
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日付 |
2015-02-06 |
| 書誌情報 |
PHYSICAL REVIEW B
巻 90,
号 18,
p. 184414-1-184414-4,
発行日 2014-11-01
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| Abstract |
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内容記述タイプ |
Other |
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内容記述 |
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. |
| 出版者 |
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出版者 |
American Physical Society |
| 権利 |
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権利情報 |
©2014 American Physical Society |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1103/PhysRevB.90.184414 |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
prb-v90p184414.pdf (463.4 kB)
