書誌事項
- タイトル別名
-
- Magnetization Process and Quantum Many-Body Effects in Spin-1/2 Triangular-Lattice Antiferromagnet(Research)
- スピンが1/2の三角格子反強磁性体の磁化過程と量子多体効果
- スピン ガ 1/2 ノ サンカク ゴウシ ハン キョウジセイタイ ノ ジカ カテイ ト リョウシ タタイ コウカ
この論文をさがす
抄録
Hexagonal compound Ba_3CoSb_2O_9 approximates the two-dimensional S=1/2 triangular-lattice Heisenberg antiferromagnet, in which a magnetic Co^<2+> ion has an effective spin-1/2. We have performed high-field magnetization measurements on Ba_3CoSb_2O_9 using powdered sample and single crystals. For powdered sample, we found that the entire magnetization curve including the one-third quantum magnetization plateau is in excellent quantitative agreement with the results of theoretical calculations. However, for single crystals, we observed anisotropy in magnetization process. A one-third quantum plateau is clearly observed for H‖ab, whereas for H‖c, the magnetization curve exhibits a cusp near one-third of the saturation field. The suppression of the one-third plateau for H‖c is ascribed to the easy-plane anisotropy. For H‖ab, we found an small magnetization step above the plateau range indicative of a new high-field quantum phase.
収録刊行物
-
- 日本物理学会誌
-
日本物理学会誌 69 (1), 24-28, 2014-01-05
一般社団法人 日本物理学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390001288158460800
-
- NII論文ID
- 110009686560
-
- NII書誌ID
- AN00196952
-
- ISSN
- 24238872
- 00290181
-
- NDL書誌ID
- 025150483
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可