内蒙古大学学报（自然科学版）
內矇古大學學報（自然科學版）
내몽고대학학보（자연과학판）
ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS NEIMONGOL
2010年
1期
57-65
,共9页
纤锌矿%量子阱%纳米凹槽%光学声子模
纖鋅礦%量子阱%納米凹槽%光學聲子模
섬자광%양자정%납미요조%광학성자모
wurtzite%quantum well%nanogroove%optical phonon mode
基于介电连续模型和Loudon单轴模型,采用转移矩阵法讨论纤锌矿AlN/GaN/InN/GaN/AlN量子阱的界面和局域光学声子模.结果表明在GaN阱区引入InN纳米凹槽使纤锌矿AlN/GaN/AlN量子阱的光学声子发生较大变化.对给定波矢,在不同的频率范围内,存在两种界面光学声子模和两种局域光学声子模.声子色散关系和静电势分布表现出较AlN/GaN/AlN单量子阱更为复杂的形态.
基于介電連續模型和Loudon單軸模型,採用轉移矩陣法討論纖鋅礦AlN/GaN/InN/GaN/AlN量子阱的界麵和跼域光學聲子模.結果錶明在GaN阱區引入InN納米凹槽使纖鋅礦AlN/GaN/AlN量子阱的光學聲子髮生較大變化.對給定波矢,在不同的頻率範圍內,存在兩種界麵光學聲子模和兩種跼域光學聲子模.聲子色散關繫和靜電勢分佈錶現齣較AlN/GaN/AlN單量子阱更為複雜的形態.
기우개전련속모형화Loudon단축모형,채용전이구진법토론섬자광AlN/GaN/InN/GaN/AlN양자정적계면화국역광학성자모.결과표명재GaN정구인입InN납미요조사섬자광AlN/GaN/AlN양자정적광학성자발생교대변화.대급정파시,재불동적빈솔범위내,존재량충계면광학성자모화량충국역광학성자모.성자색산관계화정전세분포표현출교AlN/GaN/AlN단양자정경위복잡적형태.
Based on the dielectric continuum model and Loudon's single-axis model,the transfer matrix method is adopted to investigate interface and confined optical-phonon modes in wurtzite AlN/GaN/InN/GaN/AlN quantum wells.The results show that the introduction of an InN nanogroove in the center of a quantum well changes optical phonon modes of the system.For a given wave vector of phonons,there are two kinds of interface optical phonons and two kinds of confined optical phonons existing in certain frequency regions.The dispersion relation and electrostatic potential of phonon modes are more complicated than that in a single AlN/GaN/AlN quantum well.
