Acoustic and optical properties of two-dimensional phonon crystals with a hexagonal symmetry are described. Differential-difference equations describing plane oscillations of a two-dimensional lattice of material structures are derived in a harmonic approximation, and dispersion dependences of acoustic and optical phonons are calculated. Branches of optical oscillations and intervals of forbidden frequencies are shown to appear when a lattice consists of two types of atoms.
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College of Information Engineering,Zhejiang University of TechnologyCollege of Information Engineering,Zhejiang University of Technology
任宏亮
马建平
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College of Computer Science and Technology,Zhejiang University of TechnologyCollege of Information Engineering,Zhejiang University of Technology
马建平
温浩
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College of Information Engineering,Zhejiang University of TechnologyCollege of Information Engineering,Zhejiang University of Technology
温浩
覃亚丽
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College of Information Engineering,Zhejiang University of TechnologyCollege of Information Engineering,Zhejiang University of Technology
覃亚丽
吴哲夫
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College of Information Engineering,Zhejiang University of TechnologyCollege of Information Engineering,Zhejiang University of Technology
吴哲夫
胡卫生
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State Key Laboratory of Advanced Optical Communication Systems and Networks,Shanghai Jiao Tong UniversityCollege of Information Engineering,Zhejiang University of Technology
胡卫生
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姜淳
金耀辉
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State Key Laboratory of Advanced Optical Communication Systems and Networks,Shanghai Jiao Tong UniversityCollege of Information Engineering,Zhejiang University of Technology
机构:
Jilin Univ, Sch Phys, Changchun 130012, Peoples R China
Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R ChinaJilin Univ, Sch Phys, Changchun 130012, Peoples R China