Elastic anomalies of charge ordering in Yb4As3

T. Goto; Y. Nemoto; S. Nakamura; A. Ochiai; T. Suzuki

doi:10.1016/S0921-4526(96)00810-1

Elastic anomalies of charge ordering in Yb₄As₃

T. Goto, Y. Nemoto, S. Nakamura, A. Ochiai, T. Suzuki

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

1 Citation (Scopus)

Abstract

Elastic constants of the mixed valence compound Yb₄As₃ with extremely low carrier 0.001 per Yb atom have been measured by the ultrasonic method. We found that the transverse C₄₄ mode exhibits a pronounced softening around the structural phase transition point at Tc = 292 K due to the charge ordering of Yb³⁺ ions along 〈111〉 direction. We interpret the softening of C₄₄ with the coupling of the strain ε_yz, ε_xy and ε_xy to charge fluctuation mode possessing the electric quadrupole moment in Yb³⁺ linear chain.

Original language	English
Pages (from-to)	702-704
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	230-232
DOIs	https://doi.org/10.1016/S0921-4526(96)00810-1
Publication status	Published - 1997 Feb
Externally published	Yes

Keywords

Charge ordering
Elastic constants
YbAs

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(96)00810-1

Cite this

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title = "Elastic anomalies of charge ordering in Yb4As3",

abstract = "Elastic constants of the mixed valence compound Yb4As3 with extremely low carrier 0.001 per Yb atom have been measured by the ultrasonic method. We found that the transverse C44 mode exhibits a pronounced softening around the structural phase transition point at Tc = 292 K due to the charge ordering of Yb3+ ions along 〈111〉 direction. We interpret the softening of C44 with the coupling of the strain εyz, εxy and εxy to charge fluctuation mode possessing the electric quadrupole moment in Yb3+ linear chain.",

keywords = "Charge ordering, Elastic constants, YbAs",

author = "T. Goto and Y. Nemoto and S. Nakamura and A. Ochiai and T. Suzuki",

year = "1997",

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doi = "10.1016/S0921-4526(96)00810-1",

language = "English",

volume = "230-232",

pages = "702--704",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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TY - JOUR

T1 - Elastic anomalies of charge ordering in Yb4As3

AU - Goto, T.

AU - Nemoto, Y.

AU - Nakamura, S.

AU - Ochiai, A.

AU - Suzuki, T.

PY - 1997/2

Y1 - 1997/2

N2 - Elastic constants of the mixed valence compound Yb4As3 with extremely low carrier 0.001 per Yb atom have been measured by the ultrasonic method. We found that the transverse C44 mode exhibits a pronounced softening around the structural phase transition point at Tc = 292 K due to the charge ordering of Yb3+ ions along 〈111〉 direction. We interpret the softening of C44 with the coupling of the strain εyz, εxy and εxy to charge fluctuation mode possessing the electric quadrupole moment in Yb3+ linear chain.

AB - Elastic constants of the mixed valence compound Yb4As3 with extremely low carrier 0.001 per Yb atom have been measured by the ultrasonic method. We found that the transverse C44 mode exhibits a pronounced softening around the structural phase transition point at Tc = 292 K due to the charge ordering of Yb3+ ions along 〈111〉 direction. We interpret the softening of C44 with the coupling of the strain εyz, εxy and εxy to charge fluctuation mode possessing the electric quadrupole moment in Yb3+ linear chain.

KW - Charge ordering

KW - Elastic constants

KW - YbAs

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

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