Semiclassical Ballistic Transport through a Circular Microstructure in Weak Magnetic Fields  

作　　者：ZHANG Yan-Hui CAI Xiang-Ji LI Zong-Liang JIANG Guo-Hui YANG Qin-Nan XU Xue-You 张延惠;蔡祥吉;李宗良;蒋国辉;杨秦男;徐学友(College of Physics and Electronics,Shandong Normal University,Jinan 250014;Information Research Institute,Shandong Academy of Sciences,Jinan 250014)

机构地区：[1]College of Physics and Electronics,Shandong Normal University,Jinan 250014 [2]Information Research Institute,Shandong Academy of Sciences,Jinan 250014

出　　处：《Chinese Physics Letters》2013年第4期26-29,共4页中国物理快报（英文版）

基　　金：the National Natural Science Foundation of China under Grant Nos 10774093 and 10374061.

摘　　要：We study magneto-transport through a weakly open circular microstructure in the perpendicular weak magnetic fields by a semiclassical approximation within the framework of the Fraunhofer diffraction effect at the lead openings.It is found that the peak positions of the transmission power spectrum can be related to simple trajectories according to classical dynamics.Moreover,we formulate the fluctuations in the transmission amplitude as functions of both the wave number k and the magnetic field B in terms of different classical trajectories,and the Aharonov-Bohm phase of the directed areas enclosed by these trajectories that reflect the quantum interference effect.

关 键 词：dynamics. effect. WEAKLY 

分 类 号：O17[理学—数学]