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Val'kov, V. V.
Effect of the concentration-dependent spin-charge correlations on the evolution of the energy structure of the 2D Emery model / V. V. Val'kov, D. M. Dzebisashvili, A. F. Barabanov // J. Exp. Theor. Phys. - 2014. - Vol. 118, Is. 6. - P. 959-970, DOI 10.1134/S1063776114060223. - Cited References: 48. - This work was supported by the program "Quantum Physics of Mesoscopic and Disordered Systems" of the Presidium of the Russian Academy of Sciences, the Russian Foundation for Basic Research (project nos. 13-02-00909, 13-02-00523, and 13-02-98013_r-sibir), and the Dynasty foundation.
. - ISSN 1063-7761. - ISSN 1090-6509РУБ Physics, Multidisciplinary
Рубрики:
SADDLE-POINT SINGULARITY
CUPRATE SUPERCONDUCTORS
FERMI-SURFACE
ANTIFERROMAGNETIC CORRELATIONS
NORMAL-STATE
Bi2Sr2CaCu2O8+δ
EXCITATIONS
YBa2Cu3O6.9
La2CuO4
YBa2Cu4O8
Аннотация: It is shown using the 2D Emery model that the strong coupling between the spin subsystem of copper ions in the singlet state and the subsystem of oxygen holes considerably reduces the spectral intensity of the correlation function for holes on the Fermi contour. Spin-charge correlations are manifested in the existence of two channels. The first channel is due to the p-d exchange coupling of spins of the oxygen and copper holes. The second channel appears as a result of spin-correlated hoppings, when the motion of holes over oxygen ions is accompanied by spin-flip processes (i.e., simultaneous changes in the spin projections of an oxygen hole and a copper ion). It is established as a result of self-consistent calculations that the allowance for the concentration dependence of spin correlators and multicenter spin-charge correlators appearing in the dispersion equation ensures a decrease in the energy of the system and considerably affects the evolution of the Fermi surface under hole doping.
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Публикация на русском языке Вальков, Валерий Владимирович. Влияние концентрационно-зависимых спин-зарядовых корреляций на эволюцию энергетической структуры двумерной модели Эмери [Текст] / В. В. Вальков, Д. М. Дзебисашвили, А. Ф. Барабанов // Ж. эксперим. и теор. физ. : Наука, 2014. - Т. 145 Вып. 6. - С. 1087-1100
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
Russian Acad Sci, Inst High Pressure Phys, Moscow 142190, Russia
Доп.точки доступа:
Dzebisashvili, D. M.; Дзебисашвили, Дмитрий Михайлович; Barabanov, A. F.; Барабанов А. Ф.; Вальков, Валерий Владимирович; Presidium of the Russian Academy of Sciences; Russian Foundation for Basic Research [13-02-00909, 13-02-00523, 13-02-98013_r-sibir]; Dynasty foundation
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