物理学报2011，Vol.60Issue(8)：589-594,6.
基于自洽输运理论的介观体系动态电导的研究
Investigation on the dynamic conductance of mesoscopic system based on the self-consistent transport theory
摘要
Abstract
According to the self-consistent electronic dynamic transport theory of mesoscopic system,we present the dynamic conductance of mesoscopic structure.As an application of this theory,we employ a coherent mesoscopic parallel-plate capacitor model in the present study.The results show that the dynamic conductance of system depends on the frequency of external field and Fermi energy of system,and is a complex with a finite imaginary part.For a smaller frequency,the conductance shows a similar feature to dc case,but with the increase of the frequency of external fields,substantial deviations between dc case and ac case are observed,the dynamic conductance of system presents a peak structure with Fermi energy varying.For a given Fermi energy,the dynamic conductance is oscillatory with frequency varying,moreover some negative imaginary parts of conductance are observed.The negative imaginary part implies the capacitive behavior,and positive imaginary part refers to the inductive behavior.关键词
自洽输运理论/相干平行板电容器/电导/介观体系Key words
self-consistent transport theory/coherent parallel-plate capacitor/conductance/mesoscopic system分类
数理科学引用本文复制引用
全军,T. C. Au Yeung,邵乐喜..基于自洽输运理论的介观体系动态电导的研究[J].物理学报,2011,60(8):589-594,6.基金项目
广东省高等学校优秀青年创新人才培养计划 （）
湛江师范学院博士科研基金（批准号：ZL1004）资助的课题 （）
