压力诱发的超导再进入的物理机制初探  

Preliminary Study on Superconductivity Occurring Again Induced by Pressure

作　　者：程开甲[1] 程漱玉[1] 

机构地区：[1]西北核技术研究所,西安710024

出　　处：《现代应用物理》2013年第4期353-355,共3页Modern Applied Physics

摘　　要：应用程-玻恩超导双带理论,分析了压力诱发的超导再进入现象,指出压力使费米面和上面空带的两能级分裂形成靠近的两能带,电子从费米面迁移到上面能带,造成动量空间中上面能带布里渊区电子的再次不对称分布,而产生新的超导相。Abstract＂ The phase of superconductivity occurring again under the effect of the pressure is analyzed by using of the Cheng - Born double-band theory of superconductivity. Under the effect of the pressure, the two energy levels begin to break to the energy bands closed each other sufficiently, electrons on the Fermi surface transfer to the energy band above, deduces asymmetry distribution of the electrons on the Brillouin zone in the above energy band again. So the new phase of superconductivity occurs.

关 键 词：超导双带理论 布里渊区 对称破缺 晶格能 交换能 

分 类 号：O511[理学—低温物理]