The strong effect of three-center interactions on the formation of superconductivity with $$d{x^2-y^2}$$ symmetry in the t-J* model

Pleiades Publishing Ltd - Tập 75 - Trang 378-382 - 2002
V. V. Val’kov1,2, T. A. Val’kova2, D. M. Dzebisashvili1,3, S. G. Ovchinnikov1,2,3
1Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russia
2Krasnoyarsk State Technical University, Krasnoyarsk, Russia
3Krasnoyarsk State University, Krasnoyarsk, Russia

Tóm tắt

The effect of three-center interactions on the formation of a superconducting phase with $$d{x^2-y^2} $$ symmetry is considered using the diagram technique for Hubbard operators and irreducible Green’s functions. It is shown that these interactions lead to a decrease in T c by a factor of several tens.

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