Thermal conductivity of the one-dimensional S=1/2 antiferromagnet Yb 4(As1-xPx)3 (x = 0 and 0.3)

A. Sanchez; S. Paschen; B. Wand; Hayuyoshi Aoki; A. Ochiai; F. Steglich

doi:10.1016/j.jmmm.2003.11.345

Thermal conductivity of the one-dimensional S=1/2 antiferromagnet Yb ₄(As_1-xP_x)₃ (x = 0 and 0.3)

A. Sanchez, S. Paschen, B. Wand, Hayuyoshi Aoki, A. Ochiai, F. Steglich

SCI - Physics

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

1 Citation (Scopus)

Abstract

The thermal conductivity κ of Yb₄(As_1-xP _x)₃ (x = 0 and 0.3) was measured in the temperature range between 0.1 and 7 K in applied magnetic fields up to 8 T. The fact that κ(7) follows, between 0.4 and 3 K, the relation aT + bT² confirms our earlier interpretation of the dominating role of magnons both as heat carriers and as scatterers for the phonons. Above 1 K, κ decreases with increasing magnetic field, the opening of a gap in the magnon-excitation spectrum being a possible explanation of this behavior.

Original language	English
Pages (from-to)	e703-e705
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.11.345
Publication status	Published - 2004 May 1

Keywords

Antiferromagnet
Magnon
Thermal conductivity
YbAs

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "The thermal conductivity κ of Yb4(As1-xP x)3 (x = 0 and 0.3) was measured in the temperature range between 0.1 and 7 K in applied magnetic fields up to 8 T. The fact that κ(7) follows, between 0.4 and 3 K, the relation aT + bT2 confirms our earlier interpretation of the dominating role of magnons both as heat carriers and as scatterers for the phonons. Above 1 K, κ decreases with increasing magnetic field, the opening of a gap in the magnon-excitation spectrum being a possible explanation of this behavior.",

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AU - Sanchez, A.

AU - Paschen, S.

AU - Wand, B.

AU - Aoki, Hayuyoshi

AU - Ochiai, A.

AU - Steglich, F.

PY - 2004/5/1

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AB - The thermal conductivity κ of Yb4(As1-xP x)3 (x = 0 and 0.3) was measured in the temperature range between 0.1 and 7 K in applied magnetic fields up to 8 T. The fact that κ(7) follows, between 0.4 and 3 K, the relation aT + bT2 confirms our earlier interpretation of the dominating role of magnons both as heat carriers and as scatterers for the phonons. Above 1 K, κ decreases with increasing magnetic field, the opening of a gap in the magnon-excitation spectrum being a possible explanation of this behavior.

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KW - Thermal conductivity

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