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首页> 外文期刊>Journal of Nuclear Physics, Material Sciences, Radiation and Applications >Theoretical Study of Interplay Between Superconductivity and Itinerant Ferromagnetism
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Theoretical Study of Interplay Between Superconductivity and Itinerant Ferromagnetism

机译：超导与流动铁磁相互作用的理论研究

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Following Green’s function technique and equation of motion method, the coexistence of superconductivity (SC) and itinerant ferromagnetism (FM) is investigated in a single band homogenous system. Self consistent equations for SC and FM order parameters, Δ and m or I respectively are derived. It is shown that there generally exists a coexistent (Δ ≠ 0, and m or I ≠ 0) solutions to the coupled equations of the order parameter in the, temperature range 0 < T < min(T_(C), T_(FM)), where T_(C) and T_(FM) are respectively the superconducting and ferromagnetic transition temperatures. Expressions for specific heat, density of states, free energy and critical field are derived. The specific heat has linear temperature dependence as opposed to the exponential decrease in the BCS theory. The density of states for a finite m increases as opposed to that of a ferromagnetic metal. Free energy study reveals that FMSC state has lowest energy than the normal FM state and therefore realized at low enough temperature .Effect of small external field is also studied. The theory is applied to explain the observations in uranium based intermetallics systems UCoGe and UIr. The agreement between theory and experiments is quite encouraging.
机译：遵循格林函数技术和运动方程法，在单频带均匀系统中研究了超导（SC）和流动铁磁（FM）的共存。推导了SC和FM阶数参数分别为Δ和m或I的自洽方程。结果表明，在0

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