Studies on Spin Ground States of Cubic-Symmetry Single-Molecule Magnets
| Project/Area Number |
23550076
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Inorganic chemistry
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| Research Institution | Osaka University |
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Principal Investigator |
NAKANO Motohiro 大阪大学, 理学(系)研究科(研究院), 教授 (00212093)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 単一分子磁石 / スピンハミルトニアン / 磁気異方性 / 高対称性分子 / 常磁性多核錯体 / トンネル分裂 |
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| Research Abstract |
Recently several cube-shaped single-molecule magnets (SMM) were reported, most of which have exact cubic symmetry (Oh). The magnetic anisotropy in conventional SMMs is uniaxial and incompatible with higher point symmetry like Oh. The highly degenerate spin ground states are studied based on the classical vector picture and the giant-spin approximation.
Giant spin ground states in cube-shaped SMMs were subjected to Oh quartic anisotropy, and eight or six lowest levels, which correspond to a set of equivalent classical stable directions, are well-isolated by an energy gap growing as ~S4.
Fine-splitting patterns of lowest levels showed longer-period modulations with increasing 2S+1, in addition to odd-even effect expected for Kramers/non-Kramers ground states. These splittings should correspond to tunnel splitting of semiclassical giant spins trapped in the anisotropy wells.
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Report
(4 results)
Research Products
(23 results)
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[Journal Article] Correlation between slow magnetic relaxation and the coordination structures of a family of linear trinuclear Zn(II)-Ln(III)-Zn(II) complexes (Ln= Tb, Dy, Ho, Er, Tm and Yb)2012
Author(s)
M. Maeda,S. Hino, K. Yamashita, Y.Kataoka, M. Nakano, T. Yamamura, T. Kajiwara
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Journal Title
Dalton Trans
Volume: 41巻
Issue: 44
Pages: 13640-13648
DOI
Related Report
Peer Reviewed
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