DISTORTED DIAMOND ISING-HUBBARD CHAIN IN THE SPECIAL LIMIT OF INFINITE ON-SITE REPULSION

被引：0

作者：

Lisnyi, B. M. ^{[1
]}

机构：

[1] Nat Acad Sci Ukraine, Inst Condensed Matter Phys, 1 Svientsitskii Str, UA-79011 Lvov, Ukraine

来源：

UKRAINIAN JOURNAL OF PHYSICS | 2024年 / 69卷 / 10期

关键词：

Ising-Hubbard diamond chain; exact solution; ground state; thermodynamic characteristics; geometric frustration; MAGNETIC-PROPERTIES; HEISENBERG MODEL; QUASI-PHASES; PLATEAU;

D O I：

10.15407/ujpe69.10.732

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The exact solution of the distorted diamond Ising-Hubbard chain is analyzed in the special limit of infinite on-site electron-electron repulsion, where the two-electron Hubbard dimer becomes equivalent to the antiferromagnetic isotropic Heisenberg dimer. The special limit of infinite repulsion for the matrix of the cell Hamiltonian of this model is analytically calculated, and it is demonstrated that the exact solution of the distorted diamond Ising-Hubbard chain in this limit coincides with the exact solution of the spin-1/2distorted diamond Ising-Heisenberg chain with antiferromagnetic isotropic Heisenberg interaction. The numerical calculation of the special limit of infinite repulsion for the ground-state phase diagram and thermodynamic characteristics of the distorted diamond Ising-Hubbard chain was performed in a way that provides a very fast convergence to the limit results for these characteristics.

引用

页数：10

共 29 条

[11] Geometrical frustration of an extended Hubbard diamond chain in the quasiatomic limit
Rojas, Onofre
de Souza, S. M.
Ananikian, N. S.
PHYSICAL REVIEW E, 2012, 85 (06):
[12] MAGNETIC PHASE-TRANSITIONS IN THE HUBBARD-MODEL WITH LARGE ON-SITE COULOMB REPULSION
IZYUMOV, YA
LETFULOV, BM
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 140 : 201 - 202
[13] Insulating phases driven by unequal on-site repulsion in the 1D unconventional Hubbard model
Xu, Yan
Ding, Hanqin
Zhang, Jun
RESULTS IN PHYSICS, 2021, 24
[14] Spin-1/2 Ising-Heisenberg distorted diamond chain with antiferromagnetic Ising and ferromagnetic Heisenberg interactions
Lisnyi, B. M.
CONDENSED MATTER PHYSICS, 2024, 27 (02)
[15] Effective Hamiltonian for a half-filled Hubbard chain with alternating on-site interactions
Kakashvili, P
Japaridze, GI
JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (32) : 5815 - 5823
[16] LOW-ENERGY EXCITED-STATES IN A HUBBARD CHAIN WITH ON-SITE ATTRACTION
WOYNAROVICH, F
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1983, 16 (34): : 6593 - 6604
[17] Ground state of the spin-1/2 Ising–Heisenberg distorted diamond chain with ferromagnetic Ising and antiferromagnetic Heisenberg interactions
Lisnyi, B.M.
Fizika Nizkikh Temperatur, 2024, 50 (07): : 588 - 593
[18] Ground state of the spin-1/2 Ising-Heisenberg distorted diamond chain with ferromagnetic Ising and antiferromagnetic Heisenberg interactions
Lisnyi, B. M.
LOW TEMPERATURE PHYSICS, 2024, 50 (07) : 527 - 532
[19] Effective Hamiltonian for a half-filled asymmetric ionic Hubbard chain with alternating on-site interaction
Grusha, I.
Menteshashvili, M.
Japaridze, G. I.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2016, 30 (03):
[20] SMALL BETA-EXPANSION FOR INFINITE CHAIN LIMIT OF ONE-DIMENSIONAL HUBBARD-MODEL
BRACKEN, P
JOURNAL OF MATHEMATICAL CHEMISTRY, 1994, 16 (1-2) : 159 - 165

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