Competition and cooperation between the bond change and the frustration in low-dimensional quantum spin systems
| Project/Area Number |
18540340
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Condensed matter physics II
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
OKAMOTO Kiyomi (2008-2009) Tokyo Institute of Technology, 大学院・理工学研究科, 助教 (10114860)
岡本 清美 (2006-2007) Tokyo Institute of Technology, 大学院・理工学研究科, 助教 (40152342)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TONEGAWA Takashi 福井工業大学, 工学部, 教授 (80028167)
|
|---|
| Project Period (FY) |
2006 – 2009
|
| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥3,940,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥540,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2006: ¥1,600,000 (Direct Cost: ¥1,600,000)
|
|---|
| Keywords | 磁性 / 量子スピン / 量子相転移 / フラストレーション / 競合相互作用 / ボンド変化 / 低次元系 / 磁化プラトー / 低次元 / 磁性体 / スピン / 統計力学 |
|---|
| Research Abstract |
We investigated one-dimensional quantum spin systems with bond changes and frustrations. The models we treated were : distorted diamond type spin chain, isosceles triangle spin tube, S=1 and S=2 alternating spin chain, S=1 spin chain with frustrations, anomalies of susceptibility and specific heat of spin gap system in finite magnetic field, and so on. We used the exact solution, perturbation method, numerical diagonalization and density matrix renormalization group.
|
Report
(6 results)
Research Products
(110 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] スピンナノチューブの異常量子現象2010
Author(s)
坂井徹, 佐藤正寛, 奥西巧一, 岡本清美, 糸井千岳
Organizer
次世代スーパーコンピュータプロジェクト,ナノ分野グランドチャレンジ研究開発,第4回公開シンポジウム
Place of Presentation
岡崎コンファレンスセンター
Year and Date
2010-03-05
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] スピンナノチューブの異常量子物性2008
Author(s)
坂井徹, 佐藤正寛, 奥西巧一, 大塚雄一, 岡本清美, 糸井千岳
Organizer
金属錯体の固体物性科学最前線-錯体化学と固体物性物理の連携新領域創成をめざして-
Place of Presentation
東北大学理学部
Year and Date
2008-12-19
Related Report
-
-
-
-
-
[Presentation] 3本鎖スピンチューブの量子相転移2008
Author(s)
坂井徹, 奥西巧一, 大塚雄一, 岡本清美, 佐藤正寛, 糸井千岳
Organizer
日本物理学会2008年秋季大会
Place of Presentation
岩手大学小白川キャンパス
Year and Date
2008-09-22
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
