2010 Fiscal Year Final Research Report
Theory of photon-spin coupled systems
| Project Area | Creation and control of spin current |
|---|
| Project/Area Number |
19048015
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
|
| Allocation Type | Single-year Grants |
|---|
| Review Section |
Science and Engineering
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
NAGAOSA Naoto The University of Tokyo, 大学院・工学系研究科, 教授 (60164406)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MURAKAMI Shuichi 東京工業大学, 大学院・理工学研究科, 准教授 (30282685)
|
|---|
| Project Period (FY) |
2007 – 2010
|
| Keywords | スピン流 / ベリー位相 / 光学活性 / 非線形・非平衡過程 |
|---|
| Research Abstract |
As a representative example of the manipulation of spins by photons, we studied theoretically the photo-induced magnetic phase transition, i.e., the transition between the antiferromagnetic insulator and ferromagnetic metal, in terms of the quantum simulation. We have revealed several new phenomena such as the various space-time pattern formation, multi-particle-hole pair generation, and irreversibility.
We also studied the electronic states near the impurity in Au host metal by the first-principles band structure calculation and quantum Monte Carlo simulation, and have revealed that the orbital-dependent Kondo effect leads via the skew scattering the huge spin Hall angle. This result is consistent with the experiments.
|
