| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Outline of Final Research Achievements |
We derived equations of motion for the staggered dynamics in antiferromagnets by using collective coordinates approach [Phys. Rev. Lett. 110, 127208 (2013)]. Based on it we were able to describe the dynamics of antiferromagnetic skyrmions [Phys. Rev. Lett. 116, 147203 (2016)]. An antiferromagnetic Skyrmion is a compound topological object with a similar but of opposite sign spin texture on each sublattice, which results in the absence of topological Hall effect. We find that this composite nature gives rise to different dynamical behavior, both due to current and temperature effects. Another achievement is related to the study of domain wall dynamics in a magnetoelectric antiferromagnet and its implications for magnetoelectric memory applications [Appl. Phys. Lett. 108, 132403 (2016)]. We found that the domain wall mobility has a maximum as a function of electric field due to the induced gyrotropic coupling.
|
