2012 Fiscal Year Final Research Report
Study of topological order and detection of edge statein the spin liquid state realized in an organic material
| Project/Area Number |
23684025
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ITOU Tetsuaki 東京大学, 大学院・工学系研究科, 講師 (50402748)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 分子性固体・有機導体 / スピン液体 |
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| Research Abstract |
I have confirmed that the organic triangular-lattice system EtMe_3Sb[Pd(dmit)_2]_2 has an spin-liquid ground state without antiferromagnetic ordering. The temperature dependence of the spin-lattice relaxation rate suggests that the spin state of this system undergoes an abrupt change at around 1 K. Although some theories had predicted that such an instability is accompanied by topological ordering, I have reached a conclusion that topological ordering is not likely to be realized in this system.
I have also clarified the electronic states which appear when this spin liquid state is destroyed by substituting the counter cation or applying pressure.
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