摘要
应用准经典粒子理论和量子力学测不准关系,得到了两类常见势阱(三角形和抛物线)模型中二维电子气的能级宽度.发现:两种模型中二维电子气的能级宽度都随外加电场增强而增宽,在相同电场下抛物线型势阱中的二维电子气的能级宽度比三角形势阱中相应的宽度要窄,同时能级宽度也随能级量子数的增大而增宽,计算结果能与实验较好的吻合.
Applying theories on quasi classical particles and the uncertainty relation of quantum mechanics,the author gets the formula of uncertainty and energy level width in triangular well and parabolic well of two dimension electron gas（2DEG）. Based on these, the author finds that the energy width will increase along with the increasing of electronic field intensity and quantum number at the same electronic field, the energy width of parabolic well is more narrow than width of triangular well. At the same time, the result of the paper is agreeable to the experiment.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第3期57-61,共5页
Journal of Southwest China Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(60278016)
重庆三峡学院院级资助项目(2005SSXYRC0004)
关键词
二维电子气
能级宽度
三角势阱
抛物线势阱
mesoscopic system
energy level width triangular well parabolic well
