Field-Induced Gap Formation in Yb4AS3

Masaki Oshikawa; Kazuo Ueda; Hidekazu Aoki; Akira Ochiai; Masahumi Kohgi

doi:10.1143/JPSJ.68.3181

Field-Induced Gap Formation in Yb₄AS₃

Masaki Oshikawa, Kazuo Ueda, Hidekazu Aoki, Akira Ochiai, Masahumi Kohgi

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

89 Citations (Scopus)

Abstract

The field-induced gap observed in the specific heat of Yb₄As₃ is interpreted as being due to the effective staggered field introduced by the alternating g-tensor and alternating Dzyaloshinsky-Moriya interactions. This mechanism also provides a natural explanation for the anomalous increase of magnetic susceptibility at low temperatures. A specific prediction is made for the dependence of the gap on the field direction.

Original language	English
Pages (from-to)	3181-3184
Number of pages	4
Journal	journal of the physical society of japan
Volume	68
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.68.3181
Publication status	Published - 1999 Jan 1
Externally published	Yes

Keywords

Charge ordering
Dzyaloshinsky-Moriya interaction
Field-induced gap
One-dimensional Heisenberg antiferromagnet
YbAs

ASJC Scopus subject areas

Physics and Astronomy(all)

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AU - Oshikawa, Masaki

AU - Ueda, Kazuo

AU - Aoki, Hidekazu

AU - Ochiai, Akira

AU - Kohgi, Masahumi

PY - 1999/1/1

Y1 - 1999/1/1

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AB - The field-induced gap observed in the specific heat of Yb4As3 is interpreted as being due to the effective staggered field introduced by the alternating g-tensor and alternating Dzyaloshinsky-Moriya interactions. This mechanism also provides a natural explanation for the anomalous increase of magnetic susceptibility at low temperatures. A specific prediction is made for the dependence of the gap on the field direction.

KW - Charge ordering

KW - Dzyaloshinsky-Moriya interaction

KW - Field-induced gap

KW - One-dimensional Heisenberg antiferromagnet

KW - YbAs

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