2011 Fiscal Year Final Research Report
Development of Novel Refrigeration Method and Helium. Quasiparticle Spintronics using Nanopores
| Project/Area Number |
22654041
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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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 | Keio University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HONDA Kensuke 山口大学, 理工学研究科, 准教授 (60334314)
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| Project Period (FY) |
2010 – 2011
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| Keywords | 低温物性 / 物性実験 / スピントロニクス / ヘリウム34混合液 / ナノポア |
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| Research Abstract |
We develop a novel method for refrigeration using helium isotope mixture liquid(^3He-^4He) in nanoporous media, and study the spintronic properties of helium-3 quasiparticles. Porous alumina substrates in which the pore size is narrowed by plating gold are successfully prepared. Measurements of superfluid properties of confined liquid^4He showed the reduction of pore size down to 10 nm. We pursue these methods to decrease the pore size down to 5 nm, at which the energy quantization of^3He quasiparticles and refrigeration are expected.
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