Superconductivity due to Two Dimensional Antiferromagnetic Spin Fluctuation including Vertex Corrections : Condensed Matter: Electronic Properties, etc.

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概要

• 論文の詳細を見る

• We calculate self-consistently the Green's function and dynamical spin susceptibility on the basis of the self-consistent renormalization (SCR) theory for the two-dimensional single-band Hubbard model near half-filling. Not only the vertex corrections to the susceptibility but also those to the self-energy are incorporated in our theory. We find that the peak positions in the spectral density of dynamical spin susceptibility are shifted to the antiferromagnetic wave vector Q due to the effect of the vertex correction. The particle-article irreducible vertex in the linearized gap equation is approximated by the maximally crossed diagrams generated by the bare interactions and the interactions resulting from the spin fluctuations. The vertex corrections enhance both the self-energy correction and the effective pairing potential in the d_<x^2-y^2> is always realized.

• 社団法人日本物理学会の論文
• 2000-01-15

著者

• Nakamura Satoshi

  Institute For Solid State Physics University Of Tokyo:department Of Physics Faculty Of Science And Technology Science University Of Tokyo

• Nakamura Satoshi

  Institute for Medical and Dental Engineering, Tokyo Medical and Dental University

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• Superconductivity due to Two Dimensional Antiferromagnetic Spin Fluctuation including Vertex Corrections : Condensed Matter: Electronic Properties, etc.

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