摘要
在三角量子阱中,考虑电子和光学声子的弱耦合,用线性组合算符和幺正变换相结合的方法,导出了三角量子阱中弱耦合极化子的声子平均数表达式,发现了电-声子耦合系数和声子平均数的线性关系.结果表明电声子耦合强度对声子平均数的影响不可忽略,以半导体弱耦合材料为例讨论了两者之间明确的比例性,此结果在实际研究中有一定的指导意义.
Considering the weak-coupling of electrons and optical phonons, the expression of phonon mean number of weak-coupling polaron in triangular quantum well is derived by combining linear combination operator with unitary transformation. The linear relationship between electron-phonon coupling coefficient and phonon mean number is found. Results show that the influence of electron-phonon coupling strength on the phonon mean number can't be ignored. Taking the semiconductor weak-coupled material as an example, the definite proportionality between the two materials is discussed. The result has certain theoretical guiding significance in the practical research.
作者
张海瑞
丽英
高宽云
ZHANG Hairui;LI Ying;GAO Kuanyun(Department of Environmental Engineering,Huhhot Minzu College,Huhhot 010051,China;School of Computer Information Management,Inner Mongolia University of Finance and Economics,Hohhot 010070,China)
出处
《量子电子学报》
CAS
CSCD
北大核心
2018年第6期743-746,共4页
Chinese Journal of Quantum Electronics
基金
内蒙古自治区高等学校青年科技英才支持计划
NJYT-17-B36
内蒙古高等学校自然科学项目基金
NJZY231
NJZC16144~~
关键词
光电子学
三角量子阱
极化子
声子平均数
幺正变换
optoelectronics
triangular quantum well
polaron
mean number of phonons
unitary transfor- mation