Journal
PHYSICS LETTERS A
Volume 378, Issue 30-31, Pages 2239-2244Publisher
ELSEVIER
DOI: 10.1016/j.physleta.2014.05.007
Keywords
Phononic crystal; Temperature effect; Defect states
Categories
Funding
- National Natural Science Foundation of China [11004039, 11374066, 11374068]
- Zhujiang Science and Technology Star Foundation of Guangzhou [2011J2200013]
- Natural Science Foundation of Guangdong [S2012020010885]
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Temperature effects on the defect states are investigated in two models, constructed by changing the temperature of the central rod and rotating it 45 degrees as well as changing the temperature of the central rod respectively. The results show that the defect modes will fall in the band gap when the surrounding temperature of phononic crystal is higher than the Curie temperature (T-c) and the temperature of central defect rod is lower than T-c in Model 1, while the defect modes will emerge in Model 2 as long as the surrounding temperature of phononic crystal is higher than T-c. (C) 2014 Elsevier B.V. All rights reserved.
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