Thermodynamic study of anisotropic excitation stracture and quantum critical behavior on quantum spin liquid
| Project/Area Number |
24740252
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | Osaka University |
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Principal Investigator |
Yamashita Satoshi 大阪大学, 理学(系)研究科(研究院), 助教 (40587466)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 量子スピン液体 / 分子性導体 / 熱測定 / 強相関 / 分子性固体 / 磁性 |
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| Outline of Final Research Achievements |
Quantum spin liquid(QSL) with gap-less excitation was observed in dithiolene complex EtMe3Sb[Pd(dmit)2]2. In order to distinguish whether the gap-less behavior is one kind of critical behavior or a character of “QSL phase”, we have performed systematic heat capacity measurements for caion mixed solid solution system of XY[Pd(dmit)2]2. From the measurements for QSL+Antiferromangetic(AF) system, QSL+Charge order(CO) System, we found that the g values in heat capacity were slightly decrease with increasing AF content and slightly increase with increase CO content. This behavior was reproduced in AF+CO system. We confirmed the gap-less character is originated from the QSL phase. The critical like behavior was also observed on QSL-AF phase boundary.
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Report
(5 results)
Research Products
(24 results)
