2001年1月
Low-lying magnetic excitation of the Shastry-Sutherland model
PHYSICAL REVIEW LETTERS
- ,
- ,
- 巻
- 86
- 号
- 3
- 開始ページ
- 520
- 終了ページ
- 523
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.86.520
- 出版者・発行元
- AMERICAN PHYSICAL SOC
By using perturbation calculation and numerical diagonalization, the low-energy spin dynamics of the Shastry-Sutherland model is investigated with particular attention to the two-particle coherent motion. In addition to spin-singlet- and triplet-bound states, we find novel branches of coherent motion of a bound quintet pair, which are usually unstable because of repulsion. Unusual dispersion observed in neutron-scattering measurements is explained by the present theory. The importance of the effects of phonons is also pointed out.
- リンク情報
- ID情報
-
- DOI : 10.1103/PhysRevLett.86.520
- ISSN : 0031-9007
- Web of Science ID : WOS:000166402400038