2017 Fiscal Year Final Research Report
Demonstration of spin-torque oscillation at near THz wave frequency
| Project/Area Number |
16K14244
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Electron device/Electronic equipment
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
鈴木 和也 東北大学, 材料科学高等研究所, 助教 (20734297)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
KUBOTA hitoshi 産業技術総合研究所, スピントロニクス研究センター, 総括研究主幹 (30261605)
|
|---|
| Project Period (FY) |
2016-04-01 – 2018-03-31
|
| Keywords | スピントロニクス / テラヘルツ波 / スピントルクダイオード / スピンルク発振素子 / マンガン合金 |
|---|
| Outline of Final Research Achievements |
Spin-torque oscillation is one of the auto-oscillation phenomena in spintronics which is observed in nano-scale magnetoresistive devices biased by electric current. The aim of this study is to demonstrate the spin-torque oscillation at near THz wave frequency, 0.1 THz, using our unique Mn-based alloys exhibiting spin precession at THz frequency and small damping as well as unique ultra-thin film growth techniques.
We observed, for the first time, the spin-torque-diode effect originating from the spin-torque working at the frequency over 70 GHz, near the THz wave range. In addition we obtained an insight into giant magnetoresisitive devices and its nano-fabrication for realizing the spin-torque oscillator based on Mn-based alloys for future sub-THz oscillators.
|
| Free Research Field |
スピントロニクス
|
