纳米线中声学极化子基态能量的求解  

Solution of Ground-state Energy of Acoustic Polaron in Nanowires

作　　者：刘晓琼[1] 侯俊华[1] 

机构地区：[1]山西师范大学物理与信息工程学院,山西临汾041004

出　　处：《河南科学》2015年第3期346-349,共4页Henan Science

基　　金：国家自然科学基金(11147159)

摘　　要：首先推导了纳米线中电子-声学声子相互作用的新哈密顿量,然后用Huybrechts变分法计算出了声学极化子的基态能量,并进一步讨论了纳米线中声学极化子自陷的判别标准.与前人研究成果对比发现,纳米线中声学极化子自陷的判别标准与一维声学极化子自陷的判别标准相当.A new electron-acoustic-phonon interaction Hamiltonian in nanowires is derived, and the ground state energy of the acoustic polaron is calculated by using Huybrechts variational approach. The critical value of self- trapping transition of the acoustic polarons in nanowires is discussed. The self-trapping transition of the acoustic polarons in nanowires is comparable with that in 1D system.

关 键 词：纳米线 电子-声学声子相互作用 自陷 

分 类 号：O482.1[理学—固体物理]