Unique phase transition on spin-2 triangular lattice of Ag2MnO2
-
- Yoshida Hiroyuki
- Institute for Solid State Physics, University of Tokyo
-
- Ahlert Sascha
- Max-Planck-Institut für Festköperforschung
-
- Jansen Martin
- Max-Planck-Institut für Festköperforschung
-
- Okamoto Yoshihiko
- Institute for Solid State Physics, University of Tokyo
-
- Yamaura Jun-Ichi
- Institute for Solid State Physics, University of Tokyo
-
- Hiroi Zenji
- Institute for Solid State Physics, University of Tokyo
書誌事項
- タイトル別名
-
- Unique Phase Transition on Spin-2 Triangular Lattice of Ag<SUB>2</SUB>MnO<SUB>2</SUB>
この論文をさがす
抄録
Ag2MnO2 is studied as a possible candidate compound for an antiferromagnetic XY spin model on a triangular lattice. In spite of the large Curie–Weiss temperature of −430 K found in magnetic susceptibility, Mn3+ spins with S=2 do not undergo a conventional long-range order down to 2 K probably owing to the geometrical frustration and two dimensionality in the system. Instead, a unique phase transition is found at 80 K, where specific heat exhibits a clear sign of a second-order phase transition, while magnetic susceptibility changes smoothly without a distinct anomaly. We think that this transition is related to the chirality degree of freedom associated with a short-range order, which has been expected for the classical XY spin model on a triangular lattice. On further cooling, spin-glass-like behavior is observed below 22 K, possibly corresponding to a quasi-long-range order.
収録刊行物
-
- Journal of the Physical Society of Japan
-
Journal of the Physical Society of Japan 77 (7), 074719-074719, 2008
一般社団法人 日本物理学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001204197638784
-
- NII論文ID
- 130005436989
- 110006821329
- 210000107349
-
- NII書誌ID
- AA00704814
-
- ISSN
- 13474073
- 00319015
-
- NDL書誌ID
- 9577166
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
-
- 抄録ライセンスフラグ
- 使用不可