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Using the plane-wave expansion method under supercell approximation, band structures of spin waves propagating in two-dimensional magnonic crystals with coupling multi-point defects and magnetization field distributions of some defect modes are calculated. The results indicate that the energies of point defect modes can couple each other, and propagate along the direction of the multi-point defects in these structures. Utilizing the coupling characteristics of defect modes, two-dimensional magnonic crystals can be used as the fabricating materials of spin-wave waveguides.
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Keywords:
- magnonic crystals /
- point defects /
- wave-guide /
- plane-wave expansion method
[1] Kim S K, Lee K S, Han D S 2009 Appl. Phys. Lett. 95 082507
[2] Nikitov S A, Tailhades P, Tsai C S 2001 J. Magn. Magn. Mater. 236 320
[3] Wang Z K, Zhang V L, Lim H S, Ng S C, Kuok M H, Jain S, Adeyeye A O 2009 Appl. Phys. Lett. 94 083112
[4] Wang Z K, Zhang V L, Lim H S, Ng S C, Kuok M H, Jain S, Adeyeye A O 2010 ACS Nano. 4 643
[5] Vasseur J O, Dobrzynski L, Djafari-Rouhani B, Puszkarski H 1996 Phys. Rev. B 54 1043
[6] Cao Y J, Yun G H, Liang X X, Bai N 2010 J. Phys. D: Appl. Phys. 43 305005
[7] Puszkarski H, Krawczyk M 2003 Solid State Phenom. 94 125
[8] Krawczyk M, Puszkarski H 2008 Phys. Rev. B 77 054437
[9] Yang H, Yun G H, Cao Y J 2011 J. Phys. D: Appl. Phys. 44 455001
[10] Kuchko A N, Sokolovskii M L, Kruglyak V V 2005 Physica B 370 73
[11] Kruglyak V V, Sokolovskii M L, Tkachenko V S, Kuchko A N 2006 J. Appl. Phys. 99 08C906
[12] Yang H, Yun G H, Cao Y J 2012 J. Appl. Phys. 111 013908
[13] Kruglyak V V, Kuchko A N 2001 Phys. Met. Metallogr. 92 211
[14] Cao Y J, Yun G H, Narsu 2011 Acta Phys. Sin. 60 077502 (in Chinese) [曹永军, 云国宏, 那日苏 2011 60 077502]
[15] Sigalas M M 1997 J. Acoust. Soc. Am. 101 1256
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[1] Kim S K, Lee K S, Han D S 2009 Appl. Phys. Lett. 95 082507
[2] Nikitov S A, Tailhades P, Tsai C S 2001 J. Magn. Magn. Mater. 236 320
[3] Wang Z K, Zhang V L, Lim H S, Ng S C, Kuok M H, Jain S, Adeyeye A O 2009 Appl. Phys. Lett. 94 083112
[4] Wang Z K, Zhang V L, Lim H S, Ng S C, Kuok M H, Jain S, Adeyeye A O 2010 ACS Nano. 4 643
[5] Vasseur J O, Dobrzynski L, Djafari-Rouhani B, Puszkarski H 1996 Phys. Rev. B 54 1043
[6] Cao Y J, Yun G H, Liang X X, Bai N 2010 J. Phys. D: Appl. Phys. 43 305005
[7] Puszkarski H, Krawczyk M 2003 Solid State Phenom. 94 125
[8] Krawczyk M, Puszkarski H 2008 Phys. Rev. B 77 054437
[9] Yang H, Yun G H, Cao Y J 2011 J. Phys. D: Appl. Phys. 44 455001
[10] Kuchko A N, Sokolovskii M L, Kruglyak V V 2005 Physica B 370 73
[11] Kruglyak V V, Sokolovskii M L, Tkachenko V S, Kuchko A N 2006 J. Appl. Phys. 99 08C906
[12] Yang H, Yun G H, Cao Y J 2012 J. Appl. Phys. 111 013908
[13] Kruglyak V V, Kuchko A N 2001 Phys. Met. Metallogr. 92 211
[14] Cao Y J, Yun G H, Narsu 2011 Acta Phys. Sin. 60 077502 (in Chinese) [曹永军, 云国宏, 那日苏 2011 60 077502]
[15] Sigalas M M 1997 J. Acoust. Soc. Am. 101 1256
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