Open AccessCharacteristics and applications of line defect modes in two-dimensional magnonic crystals
Author(s) -
Cao Yong-Jun,
Jiang Xin
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.087501
Subject(s) - supercell , line (geometry) , condensed matter physics , crystal (programming language) , materials science , band gap , plane (geometry) , physics , optics , geometry , mathematics , thunderstorm , meteorology , computer science , programming language
In this paper, band structures and defect modes of two-dimensional magnonic crystals with line defect are calculated by using the plane-wave expansion method under supercell approximation. The obtained results show that line defect modes can be produced in the band gap by introducing the line defect bodies into the two-dimensional magnonic crystal. The presence of the line defect modes leads to the spin waves propagating along the direction of the line defects in these structures. Utilizing the wave-guide characteristic of line defect modes, two-dimensional magnonic crystals can be used as the materials for fabricating spin-wave waveguides.