Excitonic Order in Strongly Correlated Systems with the Spin Crossover

被引：1
|
作者：
Orlov, Yu. S. [1 ,2 ]
Nikolaev, S. V. [1 ,2 ]
Ovchinnikov, S. G. [1 ,2 ]
机构：
[1] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[2] Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr KSC, Siberian Branch, Krasnoyarsk 660036, Russia
来源：
JETP LETTERS | 2023年 / 117卷 / 09期
基金：
俄罗斯科学基金会;
关键词：
TRANSITION; LACOO3;
D O I：
10.1134/S0021364023600878
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Features of the formation of the magnetic structure and the exciton Bose-Einstein condensate phase of magnetic excitons in strongly correlated systems near the spin crossover have been considered with the effective Hamiltonian obtained from the two-band Hubbard-Kanamori model. The coexistence of antiferromagnetism and exciton condensate, as well as the appearance of the long-range excitonic antiferromagnetic order even in the absence of the interatomic exchange interaction, has been revealed. The role of the electron-phonon coupling has been considered.
引用
收藏
页码：708 / 715
页数：8
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