2011 Fiscal Year Final Research Report
Study of Spin Gap System Using High Energy Neutron
| Project/Area Number |
21540348
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | High Energy Accelerator Research Organization |
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Principal Investigator |
YOKOO Tetsuya 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 研究機関講師 (10391707)
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| Co-Investigator(Kenkyū-buntansha) |
ITOH Shinichi 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 准教授 (00221771)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 磁性 / 量子スピン |
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| Research Abstract |
It is proposed that spin-Peierls transition, where 1-dimensional(1D) magnetic correlation is only dominant, takes place accompanied by an orbital ordering of Ti t_<2g> in TiOBr. In this research program, we performed inelastic neutron scattering experiments in order to investigate the magnetic dynamics involving the spin gap. In the experiment at LANCSE, it is observed a magnetic signal at 10 meV, whose momentum dependence is well explained by 1D structure factor. In more precice measurement at J-PARC, we successfully observed a new signal at lower energy of 6 meV.
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