Spin and Charge Susceptibilities of the Two-Orbital Model within the Cluster Perturbation Theory for Fe-Based Materials

Описание

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1007/s10948-016-3784-8

Ключевые слова: Fe-based superconductors, Mutiorbital models, Cluster perturbation theory, Approximation algorithms, Unmanned aerial vehicles (UAV), Charge susceptibilities, Cluster perturbation theories, Fe-based materials, Hubbard interaction, Random phase approximations, Self-energy corrections, Two-orbital models, Perturbation techniques

Аннотация: Cluster perturbation theory is used to calculate band structure, spectral functions, Fermi surface, and spin and charge susceptibilities for the two-orbital model of iron pnictides with the on-site multiorbital Hubbard interactions. Susceptibilities are calculated within the approximation combining the cluster perturbation theory fПоказать полностьюor the self-energy corrections and the random-phase approximation (RPA) for the vertex renormalizations. Calculations for the small values of Hubbard repulsion U

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Издание

Журнал: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM

Выпуск журнала: Vol. 29, Is. 12

Номера страниц: 3093-3097

ISSN журнала: 15571939

Место издания: NEW YORK

Издатель: SPRINGER

Авторы

  • Nikolaev S.V. (Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Prospect 79, Krasnoyarsk 660041, Russia)
  • Korshunov M.M. (Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Prospect 79, Krasnoyarsk 660041, Russia)

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