| Project/Area Number |
24740241
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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 Prefecture University |
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Principal Investigator |
YAMAGUCHI Hironori 大阪府立大学, 理学(系)研究科(研究院), 助教 (70581023)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 量子スピン系 / スピンラダー / 有機ラジカル / フェルダジルラジカル |
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| Research Abstract |
A variety of new quantum systems were successfully synthesized by using verdazyl radical. Ab initio molecular orbital calculations and quantitative analyses of their magnetic properties revealed magnetic models formed by intermolecular magnetic interactions. In three types of spin ladders with ferromagnetic leg interactions, 3-Cl-4-F-V, 3-Br-4-F-V, and 3-I-V, unconventional magnetic phases were observed, which possibly originates from the interplay of low dimensionality and frustration. Nontrivial magnetic phase located near the magnetic saturation field in 3-I-V especially suggests development of multipolar spin correlation. In beta-2,6-Cl_2-V forming an S=1/2 Heisenberg antiferromagnetic chain with fourfold periodicity, alternating and unique Ising ferromagnetic chains were found to be effective in the specific field regions from the perturbation treatment of the spin Hamiltonian.
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