准-维有机超导的NDAP机制  

NDAP Mechanism of Superconductivity in Quasi-one-dimensional Organic Material

作　　者：盛正卯[1] 龚尧圭 张伟坪 

机构地区：[1]杭州大学物理系

出　　处：《杭州大学学报（自然科学版）》1991年第4期402-409,共8页Journal of Hangzhou University Natural Science Edition

摘　　要：本文引入一个简单的势来模拟准一维有机材料中电子所受之势,并利用无规相近似和线性响应理论求得非朗道衰减的声等离激元(Non-Damping Acoustic Plasmons简称NDAP),然后提出了准一维有机超导的NDAP新机制,并对准一维有机超导体(TMTSF)_2PF_6和准一维有机导体TMTSF-DMTCNQ进行了数值计算、比较和讨论.最后指出利用NDAP机制,得到高T_c的准一维超导体是完全可能的,并讨论了有利于提高准一维超导体转变温度的条件.In this article, a simple model potential is introduced to simulate quasi-one-dimensional structure of organic material. The Non-Damping Acoustic Plasmons (NDAP) is obtained by the Random Phase Approximation and the theory of linear response. Thus the NDAP mechanism of superconductivity in quasi-1-d organic material is proposed. Its applications in (TMTSF)2PF6-a quasi-1-d organic superconductor, and TMTSF-DMTCNQ-a quasi-1-d organic conductor are discussed and calculated. The results show that it is entirely possible to get quasi-1-d organic superconductors with high Tc. Finally, the condition favourable to the appearance of superconductivity with higher Tc is discussed.

关 键 词：超导 NDAP 转变温度 有机超导 

分 类 号：O511.2[理学—低温物理]