Magneto-elastic coupling model of deformable anisotropic superconductors
Impact Factor:1.8
DOI number:10.1209/0295-5075/118/27006
Journal:Europhysics Letters
Abstract:We develop a magneto-elastic (ME) coupling model for the interaction between thevortex lattice and crystal elasticity. The anisotropies in superconductivity and elasticity are si-multaneously included in the GL theory frame. Under this consideration, the expression of thefree energy unifies the different forms of the classical results. Concerning the ME effect on themagnetization, the theory can give a satisfying description for the field dependence of magnetiza-tion near the upper critical field. The contribution of the ME interaction to the magnetization iscomparable to the vortex-lattice energy, in materials with relatively strong pressure dependenceof the critical temperature. While the magnetization components along different vortex frameaxes are strain dependent, the magnetization ratio is independent of the ME interaction. It isstressed that the GL description of the magnetization ratio is applicable only if the applied fieldmoderately close to the upper critical field.
Co-author:Guozheng Kang,Yuanwen Gao
Correspondence Author:Yingxu Li
Volume:118
Issue:2
Page Number:27006
Number of Words:3000
Translation or Not:no
Date of Publication:2017-06-01
Included Journals:SCI
