2011 Fiscal Year Final Research Report
Theoretical study of localized spin devices with spin-wave-packet propagation to replace electron conduction devices
| Project/Area Number |
20710076
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Nanostructural science
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Project Period (FY) |
2008 – 2011
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| Keywords | 局在スピン系 / スピン緩和 / スピン-原子振動相互作用 / スピン-フォノン相互作用 / スピン-電気双極子相互作用 / スピン-軌道相互作用 / 結晶場 / 理論 |
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| Research Abstract |
We theoretically studied the spin relaxation which suppressed the sustainability of the spin-wave-packet propagation. In particular, we derived an expression of the spin-atomic vibration interaction, VSA, which was an origin of the spin relaxation, and calculated the transition probability due to VSA(i. e., the reciprocal spin relaxation time). Here, the spin-wave-packet corresponds to an excited state, in which a part of spin moment is canted in a crystal with an ordered spin state. In addition, the spin relaxation represents the transition from the excited state to the ground state. As the transition probability due to VSA becomes smaller, the spin-wave-packet has more possibility to propagate
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