外磁场中介观金属环的量子电流和能谱及其量子涨落  

The Quantum Current and Energy Spectrum in Mesoscopic Metal Ring and the Quantum Fluctuations under External Magnetic Field

作　　者：崔元顺[1] 

机构地区：[1]淮阴师范学院物理与电子学系 江苏淮安223001

出　　处：《淮阴师范学院学报（自然科学版）》2006年第1期41-45,共5页Journal of Huaiyin Teachers College;Natural Science Edition

基　　金：江苏省教育厅自然科学基金资助项目(05KJD140035)

摘　　要：针对处于外磁场中的介观金属环系统,假设在电荷空间中具有变换的对称性,通过求解本征值方程给出系统的量子电流、能谱关系;利用最小平移算符的性质等,计算介观金属环中电流和能量的量子涨落.研究介观金属环中量子电流、量子能谱的性质,分析影响量子涨落的因素.结果表明,量子电流、量子能谱不仅与外磁场、介观金属环电参数有关,而且还明显地依赖于电荷的量子化性质.For the mesoscopie metal ring system in extemal magnetic field, supposing the system has a symmetry under translation in charge space, the quantum current and the quantum energy spectnun in mesoscopie metal ring are given by solving thire eigenvalue equations; and the quantum fluctuations of the current and the energy have been calculated by the character of the minimum shift operator. The properties of the quantum current and the quantum energy spectrum have been investigated, and the effects of the parameters on the quantum fluctuations are analysed. The results show that the quantum current and the quantum energy spectrum are not only related with the external magnetic field and the parameters of the mesoscopie metal ring, but depended on the quantization character of the charge evidently.

关 键 词：介观金属环 电荷量子化 量子电流 量子能谱 量子涨落 

分 类 号：O413.1[理学—理论物理]