Spin-wave propagation in the presence of inhomogeneous Dzyaloshinskii-Moriya interactions

Seung Jae Lee, Jung Hwan Moon, Hyun Woo Lee, Kyoung Jin Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We theoretically investigate spin-wave propagation through a magnetic metamaterial with spatially modulated Dzyaloshinskii-Moriya interaction. We establish an effective Schrödinger 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.

Original languageEnglish
Article number184433
JournalPhysical Review B
Volume96
Issue number18
DOIs
Publication statusPublished - 2017 Nov 27

Fingerprint

Spin waves
Wave propagation
magnons
wave propagation
interactions
Boundary conditions
boundary conditions
Metamaterials
Field effect transistors
field strength
Energy gap
Electronic equipment
field effect transistors
analogs
Magnetic fields
electronics
magnetic fields

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Spin-wave propagation in the presence of inhomogeneous Dzyaloshinskii-Moriya interactions. / Lee, Seung Jae; Moon, Jung Hwan; Lee, Hyun Woo; Lee, Kyoung Jin.

In: Physical Review B, Vol. 96, No. 18, 184433, 27.11.2017.

Research output: Contribution to journalArticle

Lee, Seung Jae ; Moon, Jung Hwan ; Lee, Hyun Woo ; Lee, Kyoung Jin. / Spin-wave propagation in the presence of inhomogeneous Dzyaloshinskii-Moriya interactions. In: Physical Review B. 2017 ; Vol. 96, No. 18.
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