Field-dependent specific-heat of the pure and diluted 4f electron system Yb4As3

R. Matysiak; G. Kamieniarz; P. Gegenwart; H. Aoki; A. Ochiai

doi:10.1016/j.ica.2007.06.015

Field-dependent specific-heat of the pure and diluted 4f electron system Yb₄As₃

R. Matysiak, G. Kamieniarz, P. Gegenwart, H. Aoki, A. Ochiai

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

1 Citation (Scopus)

Abstract

The experimental field-dependent specific heat of the polydomain pure Yb₄As₃ and diluted (Yb_1-xLu_x)₄As₃ (x = 0.01, 0.03) systems is presented and compared with that calculated by the numerical quantum transfer-matrix method. The simulations have been performed using the S = 1/2 antiferromagnetic Heisenberg model with the transverse staggered field (appearing as a result of the antisymmetric Dzyaloshinskii-Moriya interaction) and a uniform magnetic field perpendicular to the staggered field. In the model calculations the fixed microscopic parameters have been taken and the impurity distribution has been considered. A significant improvement with respect to the previous results is shown.

Original language	English
Pages (from-to)	3955-3958
Number of pages	4
Journal	Inorganica Chimica Acta
Volume	360
Issue number	13
DOIs	https://doi.org/10.1016/j.ica.2007.06.015
Publication status	Published - 2007 Oct 1

Keywords

Dzyaloshinskii-Moriya interaction
Heisenberg model
Numerical simulation

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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title = "Field-dependent specific-heat of the pure and diluted 4f electron system Yb4As3",

abstract = "The experimental field-dependent specific heat of the polydomain pure Yb4As3 and diluted (Yb1-xLux)4As3 (x = 0.01, 0.03) systems is presented and compared with that calculated by the numerical quantum transfer-matrix method. The simulations have been performed using the S = 1/2 antiferromagnetic Heisenberg model with the transverse staggered field (appearing as a result of the antisymmetric Dzyaloshinskii-Moriya interaction) and a uniform magnetic field perpendicular to the staggered field. In the model calculations the fixed microscopic parameters have been taken and the impurity distribution has been considered. A significant improvement with respect to the previous results is shown.",

keywords = "Dzyaloshinskii-Moriya interaction, Heisenberg model, Numerical simulation",

author = "R. Matysiak and G. Kamieniarz and P. Gegenwart and H. Aoki and A. Ochiai",

note = "Funding Information: We thank Mr. Kamil Rachwa{\l} for some technical help. This work was supported by the Polish Ministry of Science and Education Grant 4 T11F 014 24 and the UE NoE project NMP3-CT-2005-515767. Computations were partially performed on PCSN supercomputing platforms. ",

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T1 - Field-dependent specific-heat of the pure and diluted 4f electron system Yb4As3

AU - Matysiak, R.

AU - Kamieniarz, G.

AU - Gegenwart, P.

AU - Aoki, H.

AU - Ochiai, A.

N1 - Funding Information: We thank Mr. Kamil Rachwał for some technical help. This work was supported by the Polish Ministry of Science and Education Grant 4 T11F 014 24 and the UE NoE project NMP3-CT-2005-515767. Computations were partially performed on PCSN supercomputing platforms.

PY - 2007/10/1

Y1 - 2007/10/1

N2 - The experimental field-dependent specific heat of the polydomain pure Yb4As3 and diluted (Yb1-xLux)4As3 (x = 0.01, 0.03) systems is presented and compared with that calculated by the numerical quantum transfer-matrix method. The simulations have been performed using the S = 1/2 antiferromagnetic Heisenberg model with the transverse staggered field (appearing as a result of the antisymmetric Dzyaloshinskii-Moriya interaction) and a uniform magnetic field perpendicular to the staggered field. In the model calculations the fixed microscopic parameters have been taken and the impurity distribution has been considered. A significant improvement with respect to the previous results is shown.

AB - The experimental field-dependent specific heat of the polydomain pure Yb4As3 and diluted (Yb1-xLux)4As3 (x = 0.01, 0.03) systems is presented and compared with that calculated by the numerical quantum transfer-matrix method. The simulations have been performed using the S = 1/2 antiferromagnetic Heisenberg model with the transverse staggered field (appearing as a result of the antisymmetric Dzyaloshinskii-Moriya interaction) and a uniform magnetic field perpendicular to the staggered field. In the model calculations the fixed microscopic parameters have been taken and the impurity distribution has been considered. A significant improvement with respect to the previous results is shown.

KW - Dzyaloshinskii-Moriya interaction

KW - Heisenberg model

KW - Numerical simulation

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