| Project/Area Number |
16K13827
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Condensed matter physics II
|
|---|
| Research Institution | The University of Tokyo (2017)
Tohoku University (2016) |
|---|
Principal Investigator |
Shiomi Yuki 東京大学, 大学院工学系研究科(工学部), 特任講師 (10633969)
|
|---|
| Project Period (FY) |
2016-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Keywords | スピントロニクス / スピン流 / 量子スピン系 / スピン液体 / スピノン / マヨラナ粒子 / キタエフ模型 / スピンエレクトロニクス / 低温物性 / 磁性 |
|---|
| Outline of Final Research Achievements |
In this research, we aimed at experimental demonstration of novel spin currents using spin excitations peculiar to quantum spin liquid states: spinon and Majorana particle. In a typical one-dimensional quantum spin-liquid Sr2CuO3 where the existence of spinon excitation has been established experimentally, we showed by using the spin Seebeck effect that application of a temperature gradient to Sr2CuO3 generates spinon spin currents. Furthermore, in a Kitaev spin liquid material RuCl3 which has attracted much attention in the condensed matter physics in the last few years, we observed the flow of Majorana particles due to a temperature gradient in thermal conductivity measurements.
|
