超导环的磁化性质研究  

Magnetization of Superconducting Rings

作　　者：马小柏[1] 刘亮[1] 王福仁[1] 聂瑞娟[1] 姚丹[2] 戴远东[1] 

机构地区：[1]北京大学人工微结构和介观物理国家重点实验室,北京100871 [2]空军航空大学,吉林长春130022

出　　处：《稀有金属材料与工程》2008年第A04期424-428,共5页Rare Metal Materials and Engineering

基　　金：高等学校博士学科点专项科研基金;科技部973项目资助(2006CB601007)

摘　　要：计算了双结超导π环、零环及规则超导环阵列的自由能随外加磁场及温度的变化,给出了超导转变温度附近的系统相图。针对高温超导体及低温超导体中出现的顺磁迈斯纳效应,用π结、零结概念,给出了一种简单的理论解释。We calculated the free energy of superconducting rings with two junction and superconducting ring array under different external magnetic fields, and offered the phase branch diagram of the system within a range near the superconducting transition temperature. A theory of π junction and 0 junction was developed to explain the paramagnetic Meissner effect in both low Tc and high Tc superconductors.

关 键 词：超导环 π结 零结 磁化 

分 类 号：O511.4[理学—低温物理]