Spin-wave propagation in the presence of inhomogeneous Dzyaloshinskii-Moriya interactions
SCIE
SCOPUS
- Title
- Spin-wave propagation in the presence of inhomogeneous Dzyaloshinskii-Moriya interactions
- Authors
- Lee, Seung-Jae; Moon, Jung-Hwan; Lee, Hyun-Woo; Lee, Kyung-Jin
- Date Issued
- 2017-11
- Publisher
- AMER PHYSICAL SOC
- Abstract
- We theoretically investigate spin-wave propagation through a magnetic metamaterial with spatially modulated Dzyaloshinskii-Moriya interaction. We establish an effective Schrodinger equation for spin waves and derive boundary conditions for spin waves passing through the boundary between two regions having different Dzyaloshinskii-Moriya interactions. Based on these boundary conditions, we find that the spin wave can be amplified at the boundary and the spin-wave band gap is tunable either by an external magnetic field or the strength of Dzyaloshinskii-Moriya interaction, which offers a spin-wave analog of the field-effect transistor in traditional electronics.
- Keywords
- CURRENT-DRIVEN DYNAMICS; REAL-SPACE OBSERVATION; DOMAIN-WALLS; SKYRMIONS; EXCHANGE; CRYSTAL; TORQUE; ORDER
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50543
- DOI
- 10.1103/PhysRevB.96.184433
- ISSN
- 2469-9950
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 96, no. 18, page. 184433, 2017-11
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