量子光学学报
量子光學學報
양자광학학보
ACTA SINICA QUANTUM OPTICA
2014年
2期
162-166
,共5页
丁朝华%吴丽娜%白旭芳
丁朝華%吳麗娜%白旭芳
정조화%오려나%백욱방
Rashba效应%量子线%束缚极化子%激发态
Rashba效應%量子線%束縳極化子%激髮態
Rashba효응%양자선%속박겁화자%격발태
Rashba effect%quantum wire%bound polaron%excited state
采用线性组合算符和幺正变换相结合的方法研究了 Rashba效应对抛物量子线中强耦合束缚极化子激发态性质的影响,计算了束缚极化子的第一内部激发态能量、激发能量和振动频率。讨论了这些量对约束强度、自旋轨道耦合强度和库伦束缚势的依赖关系。数值计算结果表明:束缚极化子的第一内部激发态能量、激发能量和振动频率都随约束强度的增加而增大;但第一激发态能量随库仑束缚势和自旋与轨道之间耦合强度的增加而减少,而激发能量和振动频率随库仑束缚势的增加而增大。
採用線性組閤算符和幺正變換相結閤的方法研究瞭 Rashba效應對拋物量子線中彊耦閤束縳極化子激髮態性質的影響,計算瞭束縳極化子的第一內部激髮態能量、激髮能量和振動頻率。討論瞭這些量對約束彊度、自鏇軌道耦閤彊度和庫倫束縳勢的依賴關繫。數值計算結果錶明:束縳極化子的第一內部激髮態能量、激髮能量和振動頻率都隨約束彊度的增加而增大;但第一激髮態能量隨庫崙束縳勢和自鏇與軌道之間耦閤彊度的增加而減少,而激髮能量和振動頻率隨庫崙束縳勢的增加而增大。
채용선성조합산부화요정변환상결합적방법연구료 Rashba효응대포물양자선중강우합속박겁화자격발태성질적영향,계산료속박겁화자적제일내부격발태능량、격발능량화진동빈솔。토론료저사량대약속강도、자선궤도우합강도화고륜속박세적의뢰관계。수치계산결과표명:속박겁화자적제일내부격발태능량、격발능량화진동빈솔도수약속강도적증가이증대;단제일격발태능량수고륜속박세화자선여궤도지간우합강도적증가이감소,이격발능량화진동빈솔수고륜속박세적증가이증대。
The influence of Rashba effect on properties of excited state of strong-coupling bound polaron in parabolic quantum wires was studied by using of the linear combination operator and the unitary transformation methods.Numerical calculations were performed and the results indicated that they would increase with the increasing of the confinement strength. The excitation energy and the vibrational frequency were increasing functions of the Coulomb bound potential;the first internal excited energy will decrease with the increasing of spin-orbit(SO)coupling strength and the Coulomb bound potential.