Effect of Crystal Field on the Electronic Structure of the Two-Band Hubbard Model with Spin Crossover | Научно-инновационный портал СФУ

Effect of Crystal Field on the Electronic Structure of the Two-Band Hubbard Model with Spin Crossover

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1134/S106377612004007X

Аннотация: We consider the change in the electronic structure of the two-band Hubbard model in the regime of strong electron correlations with spin crossover upon the passage through the crossover point depending on the crystal field growth. An abrupt semimetal-insulator-semimetal transition is detected during the passage through the spin crossover point in the absence of the spin-orbit interaction, which is accompanied by a jumpwise redistribution of the partial spectral weight between the poles of the Green function of Fermi quasiparticles. The role of the spin-orbit interaction and the change in the surface topology of surface of one-particle Green function zeros are considered. Abstract: We consider the change in the electronic structure of the two-band Hubbard model in the regime of strong electron correlations with spin crossover upon the passage through the crossover point depending on the crystal field growth. An abrupt semimetal–insulator–semimetal transition is detected during the passage through the spin crossover point in the absence of the spin–orbit interaction, which is accompanied by a jumpwise redistribution of the partial spectral weight between the poles of the Green function of Fermi quasiparticles. The role of the spin–orbit interaction and the change in the surface topology of surface of one-particle Green function zeros are considered. © 2020, Pleiades Publishing, Inc.

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Издание

Журнал: JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS

Выпуск журнала: Vol. 130, Is. 5

Номера страниц: 699-710

ISSN журнала: 10637761

Место издания: MOSCOW

Издатель: PLEIADES PUBLISHING INC

Авторы

  • Orlov Yu. S. (Russian Acad Sci, Siberian Branch, Fed Res Ctr, Kirensky Inst Phys,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Nikolaev S.V. (Russian Acad Sci, Siberian Branch, Fed Res Ctr, Kirensky Inst Phys,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Dudnikov V.A. (Russian Acad Sci, Siberian Branch, Fed Res Ctr, Kirensky Inst Phys,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)

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