2022 Fiscal Year Final Research Report
Quasiparticle viscous hydrodynamics induced by quasiparticle interaction
| Project/Area Number |
19H01840
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Review Section |
Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
|
|---|
| Research Institution | Gakushuin University |
|---|
Principal Investigator |
Machida Yo 学習院大学, 理学部, 教授 (40514740)
|
|---|
| Project Period (FY) |
2019-04-01 – 2023-03-31
|
| Keywords | 熱輸送 |
|---|
| Outline of Final Research Achievements |
By observing the hydrodynamic heat transport of phonons in graphit and sapphire, it is shown that the phenomenon is not restricted to materilas with exceptional purity. The superior thermal conductivity has been found in thin graphite. The slight difference in crystal structure can give rise to the enhancement of thermal conducitivity by thinning. The quantitative understanding of our observation remains as futuer work.
|
| Free Research Field |
固体物性
|
| Academic Significance and Societal Importance of the Research Achievements |
フォノンの流体的熱輸送が特定の純良物質や特定の温度域に限定されず、固体結晶に広く見出し得ること示し、我々の固体の熱輸送についての基礎的理解を促進した。結晶構造の僅かな違いがフォノンの流体的性質ならびに熱伝導率の大きさに多大なる影響を与え得ることを見出した。この結果はフォノンの流体的性質を積極的に活用することにより固体の熱伝導率が自在に制御でき得ることを示しており、従来の方法とは一線を画す熱伝導制御技術の礎となる可能性を提供している。
|
