Real-space investigation of valley state of spin-valley coupled transition metal dichalcogenides
| Project/Area Number |
16K17730
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Condensed matter physics I
|
|---|
| Research Institution | Institute of Physical and Chemical Research |
|---|
Principal Investigator |
Machida Tadashi 国立研究開発法人理化学研究所, 創発物性科学研究センター, 特別研究員 (60570695)
|
|---|
| Project Period (FY) |
2016-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
|
|---|
| Keywords | バレートロ二クス / スピントロ二クス / 遷移金属ダイカルコゲナイド / 走査型トンネル顕微鏡 / 走査トンネル顕微鏡 / 半導体 |
|---|
| Outline of Final Research Achievements |
We have performed Scanning tunneling microscopy and spectroscopy experiments on spin-valley coupled transition metal dichalcogenides, to investigate the role of not only spin but also orbital degrees of freedom (DOF) on the intra- and inter-valley scattering process. Our experimental results reveal that the signals of the inter-valley scattering are noticeably weaker than those of the intra-valley scattering. To understand the role of spin and orbital DOF on QPI, we performed theoretical simulations with only the spin selection rules and with the selection rules of both DOF. A comparison with the theoretical simulations indicate the necessity of the orbital selection rules to reproduce the observed suppression of inter-valley signals. These findings will provide important information in future application for valleytronics.
|
Report
(3 results)
Research Products
(11 results)
