Spin-orbit coupling induced orbital entanglement in a three-band Hubbard model

被引：0

作者：

Igoshev, Petr A. ^{[1
]}

Chizhov, Danil E. ^{[2
]}

Irkhin, Valentin Yu. ^{[1
]}

Streltsov, Sergey V. ^{[1
,2
]}

机构：

[1] Inst Met Phys, S Kovalevskaya St 18, Ekaterinburg 620108, Russia

[2] Ural Fed Univ, Dept Theoret Phys & Appl Math, Mira St 19, Ekaterinburg 620002, Russia

来源：

PHYSICAL REVIEW B | 2024年 / 110卷 / 11期

基金：

俄罗斯科学基金会;

关键词：

INSULATOR-TRANSITION; MAGNETIC-STRUCTURE; APPROXIMATION; SYSTEMS;

D O I：

10.1103/PhysRevB.110.115110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of the spin-orbit coupling on the ground state properties of the square-lattice three-band Hubbard model with a single electron per site is studied by a generalized Hartree-Fock approximation. We calculate the full phase diagram and show that there appear additional orbital-entangled phases brought about by competition of various exchange channels or by the spin-orbit coupling in addition to conventional states stabilized by the Kugel-Khomskii mechanism. One of these phases previously proposed to explain magnetic properties of Sr2VO4 is characterized by vanishing dipolar magnetic moments and antiferro-octupolar ordering. We calculated microscopic parameters for this material and demonstrate that it is located near a phase boundary of two orbital-entangled and two conventional antiferromagnetic ferro-orbital states.

引用

页数：14

共 50 条

[21] How spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator
Gotfryd, Dorota
Parschke, Ekaterina M.
Chaloupka, Jiff
Oles, Andrzej M.
Wohlfeld, Krzysztof
PHYSICAL REVIEW RESEARCH, 2020, 2 (01):
[22] Pseudogaps in the three-band Hubbard model
Alexei Sherman
The European Physical Journal B, 2016, 89
[23] Pseudogaps in the three-band Hubbard model
Sherman, Alexei
EUROPEAN PHYSICAL JOURNAL B, 2016, 89 (04):
[24] Spin-orbit coupling and correlations in three-orbital systems
Triebl, Robert
Kraberger, Gernot J.
Mravlje, Jernej
Aichhorn, Markus
PHYSICAL REVIEW B, 2018, 98 (20)
[25] Spin-orbital state induced by strong spin-orbit coupling
Onishi, Hiroaki
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011), 2012, 391
[26] Hubbard model with spin-orbit coupling: Lattice gauge theory approach
Guarnaccia, Giuseppe
Noce, Canio
PHYSICAL REVIEW B, 2012, 86 (06)
[27] Rashba spin-orbit coupling in the Kane-Mele-Hubbard model
Laubach, Manuel
Reuther, Johannes
Thomale, Ronny
Rachel, Stephan
PHYSICAL REVIEW B, 2014, 90 (16)
[28] Antiferromagnetically ordered topological semimetals in Hubbard model with spin-orbit coupling
Goyal, Garima
Singh, Dheeraj Kumar
JOURNAL OF PHYSICS-CONDENSED MATTER, 2024, 36 (26)
[29] Wannier representation for the three-band Hubbard model
Digor, DF
Moskalenko, VA
THEORETICAL AND MATHEMATICAL PHYSICS, 2002, 130 (02) : 271 - 286
[30] Wannier Representation for the Three-Band Hubbard Model
D. F. Digor
V. A. Moskalenko
Theoretical and Mathematical Physics, 2002, 130 : 271 - 286

← 1 2 3 4 5 →