Thermodynamic properties of an integrable quantum spin ladder with boundary impurities

Murray T. Batchelor; X. W. Guan; A. Foerster; A. P. Tonel; H. Q. Zhou

doi:10.1016/j.nuclphysb.2003.07.012

Thermodynamic properties of an integrable quantum spin ladder with boundary impurities

Murray T. Batchelor^*, X. W. Guan, A. Foerster, A. P. Tonel, H. Q. Zhou

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

An integrable quantum spin ladder based on the SU(4) symmetry algebra with boundary defects is studied in the framework of boundary integrability. Five nontrivial solutions of the reflection equations lead to different boundary impurities. In each case the energy spectrum is determined using the quantum inverse scattering method. The thermodynamic properties are investigated by means of the thermodynamic Bethe ansatz. In particular, the susceptibility and the magnetization of the model in the vicinity of the critical points are derived along with differing magnetic properites for antiferromagnetic and ferromagnetic impurity couplings at the edges. The results are applicable to the strong coupling ladder compounds, such as Cu₂(C₅ H₁₂N₂)₂Cl₄.

Original language	English
Pages (from-to)	385-416
Number of pages	32
Journal	Nuclear Physics B
Volume	669
Issue number	3
DOIs	https://doi.org/10.1016/j.nuclphysb.2003.07.012
Publication status	Published - 13 Oct 2003

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title = "Thermodynamic properties of an integrable quantum spin ladder with boundary impurities",

abstract = "An integrable quantum spin ladder based on the SU(4) symmetry algebra with boundary defects is studied in the framework of boundary integrability. Five nontrivial solutions of the reflection equations lead to different boundary impurities. In each case the energy spectrum is determined using the quantum inverse scattering method. The thermodynamic properties are investigated by means of the thermodynamic Bethe ansatz. In particular, the susceptibility and the magnetization of the model in the vicinity of the critical points are derived along with differing magnetic properites for antiferromagnetic and ferromagnetic impurity couplings at the edges. The results are applicable to the strong coupling ladder compounds, such as Cu2(C5 H12N2)2Cl4.",

keywords = "Impurity effects, Quantum spin ladders, Reflection equations, Thermodynamic Bethe ansatz, Yang-Baxter equation",

author = "Batchelor, {Murray T.} and Guan, {X. W.} and A. Foerster and Tonel, {A. P.} and Zhou, {H. Q.}",

year = "2003",

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volume = "669",

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T1 - Thermodynamic properties of an integrable quantum spin ladder with boundary impurities

AU - Batchelor, Murray T.

AU - Guan, X. W.

AU - Foerster, A.

AU - Tonel, A. P.

AU - Zhou, H. Q.

PY - 2003/10/13

Y1 - 2003/10/13

N2 - An integrable quantum spin ladder based on the SU(4) symmetry algebra with boundary defects is studied in the framework of boundary integrability. Five nontrivial solutions of the reflection equations lead to different boundary impurities. In each case the energy spectrum is determined using the quantum inverse scattering method. The thermodynamic properties are investigated by means of the thermodynamic Bethe ansatz. In particular, the susceptibility and the magnetization of the model in the vicinity of the critical points are derived along with differing magnetic properites for antiferromagnetic and ferromagnetic impurity couplings at the edges. The results are applicable to the strong coupling ladder compounds, such as Cu2(C5 H12N2)2Cl4.

AB - An integrable quantum spin ladder based on the SU(4) symmetry algebra with boundary defects is studied in the framework of boundary integrability. Five nontrivial solutions of the reflection equations lead to different boundary impurities. In each case the energy spectrum is determined using the quantum inverse scattering method. The thermodynamic properties are investigated by means of the thermodynamic Bethe ansatz. In particular, the susceptibility and the magnetization of the model in the vicinity of the critical points are derived along with differing magnetic properites for antiferromagnetic and ferromagnetic impurity couplings at the edges. The results are applicable to the strong coupling ladder compounds, such as Cu2(C5 H12N2)2Cl4.

KW - Impurity effects

KW - Quantum spin ladders

KW - Reflection equations

KW - Thermodynamic Bethe ansatz

KW - Yang-Baxter equation

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U2 - 10.1016/j.nuclphysb.2003.07.012

DO - 10.1016/j.nuclphysb.2003.07.012

M3 - Article

SN - 0550-3213

VL - 669

SP - 385

EP - 416

JO - Nuclear Physics B

JF - Nuclear Physics B

IS - 3

ER -

Thermodynamic properties of an integrable quantum spin ladder with boundary impurities

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