Canonical-Ensemble Calculations of the Magnetic Susceptibility for a Spin-1/2 Spherical Kagome Cluster With Dzyaloshinskii-Moriya Interactions by Using Microcanonical Thermal Pure Quantum States

For the spherical kagome system {W 72 V 30 }, which is a magnetic cluster with 30 V 4+ ions, recent experimental and theoretical studies on the magnetization process at low temperatures have indicated that Dzyaloshinskii-Moriya interaction is an important ingredient in this material. In this paper,...

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Bibliographic Details
Published inIEEE transactions on magnetics Vol. 55; no. 2; pp. 1 - 3
Main Authors Inoue, Kouki, Maeda, Yuto, Nakano, Hiroki, Fukumoto, Yoshiyuki
Format Journal Article
LanguageEnglish
Published New York IEEE 01.02.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Clusters
Couplings
Eigenvalues and eigenfunctions
Magnetic nanoparticles
Magnetic permeability
Magnetic susceptibility
Magnetism
Magnetization
Magnetization processes
Mathematical analysis
Mirrors
Temperature dependence
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Summary:For the spherical kagome system {W 72 V 30 }, which is a magnetic cluster with 30 V 4+ ions, recent experimental and theoretical studies on the magnetization process at low temperatures have indicated that Dzyaloshinskii-Moriya interaction is an important ingredient in this material. In this paper, we use microcanonical thermal pure quantum (mTPQ) states to calculate the temperature dependence of the magnetic susceptibility and compare our calculated results with an existing experimental susceptibility. These mTPQ states are generated to reproduce the smooth microcanonical ensemble, which is difficult from the canonical ensemble. We show that adequate choice of a parameter in the generation procedure of mTPQ states leads to the same temperature dependence as the canonical ensemble.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2018.2873212