Topological Structure of Phase Vortex in Resonating Valence Bond Superconductivity  

作　　者：SHI Xu-Guang DUAN Yi-Shi 

机构地区：[1]College of Basic Science and Technology, Beijing Forestry University, Beijing 100083, China [2]Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China

出　　处：《Communications in Theoretical Physics》2006年第1X期33-36,共4页理论物理通讯（英文版）

摘　　要：In this paper, based on the Schrfdinger equation and the ψ mapping theory, the accurate expression for the gradient of resonating valence bond superconducting phase Θ^2s is found. The expression of Δ↓Θ^2s is just the velocity flow without considering the coefficient. The curl of Δ↓Θ^2s is where the vortex lies, and has important relation to δ2（ψ） and an important relation to the zero points of resonating valence bond superconducting order parameter ψ. The topological structure of the vortex is characterized by the ψ-mapping topological numbers Hopf-index and Brouwer degrees. The Ginzberg-Landau equation in resonating valence bond state also is discussed in this theory. The magnetic property is discussed also.

关 键 词：ψ-mapping theory phase vortex GL-equation RVB superconductivity 

分 类 号：O41[理学—理论物理]