Thermodynamics of the charge-density-wave transition in ZrTe3: Use of a TaS3 thermometer

T. N. O'Neal; J. W. Brill; Bhaswati Ganguly; X. D. Xiang; G. Minton

doi:10.1016/0379-6779(89)90816-3

Thermodynamics of the charge-density-wave transition in ZrTe₃: Use of a TaS₃ thermometer

T. N. O'Neal, J. W. Brill, Bhaswati Ganguly, X. D. Xiang, G. Minton

Physics And Astronomy

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

4 Scopus citations

Abstract

We have measured the specific heat, c_p, and the Young's moduli, E_a and E_b, in the high-conductivity ab plane of ZrTe₃ as functions of temperature. The specific heat is measured using a niobium-doped TaS₃ bolometric thermometer, which is described in detail. At its CDW transition (T_c = 65 K), there are pronounced minima (1-2%) in the moduli, but no anomaly in c_p (Δc_p < 0.05 R = c_p/150) is observed, implying that the transition has a strong stress dependence, particularly along a. The lack of a specific-heat anomaly implies that the change in the electronic density of states is less than 2 states/eV.

Original language	English
Pages (from-to)	215-223
Number of pages	9
Journal	Synthetic Metals
Volume	31
Issue number	2
DOIs	https://doi.org/10.1016/0379-6779(89)90816-3
State	Published - Aug 1989

Bibliographical note

Funding Information:
This research was supported in part by the National Science Foundation (Solid State Physics), Grants #DMR-83-8189 and #DMR-86-15463, and by the Mabel Pew Myrin Trust.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/0379-6779(89)90816-3

Cite this

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title = "Thermodynamics of the charge-density-wave transition in ZrTe3: Use of a TaS3 thermometer",

abstract = "We have measured the specific heat, cp, and the Young's moduli, Ea and Eb, in the high-conductivity ab plane of ZrTe3 as functions of temperature. The specific heat is measured using a niobium-doped TaS3 bolometric thermometer, which is described in detail. At its CDW transition (Tc = 65 K), there are pronounced minima (1-2%) in the moduli, but no anomaly in cp (Δcp < 0.05 R = cp/150) is observed, implying that the transition has a strong stress dependence, particularly along a. The lack of a specific-heat anomaly implies that the change in the electronic density of states is less than 2 states/eV.",

author = "O'Neal, {T. N.} and Brill, {J. W.} and Bhaswati Ganguly and Xiang, {X. D.} and G. Minton",

note = "Funding Information: This research was supported in part by the National Science Foundation (Solid State Physics), Grants #DMR-83-8189 and #DMR-86-15463, and by the Mabel Pew Myrin Trust.",

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T2 - Use of a TaS3 thermometer

AU - O'Neal, T. N.

AU - Brill, J. W.

AU - Ganguly, Bhaswati

AU - Xiang, X. D.

AU - Minton, G.

N1 - Funding Information: This research was supported in part by the National Science Foundation (Solid State Physics), Grants #DMR-83-8189 and #DMR-86-15463, and by the Mabel Pew Myrin Trust.

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N2 - We have measured the specific heat, cp, and the Young's moduli, Ea and Eb, in the high-conductivity ab plane of ZrTe3 as functions of temperature. The specific heat is measured using a niobium-doped TaS3 bolometric thermometer, which is described in detail. At its CDW transition (Tc = 65 K), there are pronounced minima (1-2%) in the moduli, but no anomaly in cp (Δcp < 0.05 R = cp/150) is observed, implying that the transition has a strong stress dependence, particularly along a. The lack of a specific-heat anomaly implies that the change in the electronic density of states is less than 2 states/eV.

AB - We have measured the specific heat, cp, and the Young's moduli, Ea and Eb, in the high-conductivity ab plane of ZrTe3 as functions of temperature. The specific heat is measured using a niobium-doped TaS3 bolometric thermometer, which is described in detail. At its CDW transition (Tc = 65 K), there are pronounced minima (1-2%) in the moduli, but no anomaly in cp (Δcp < 0.05 R = cp/150) is observed, implying that the transition has a strong stress dependence, particularly along a. The lack of a specific-heat anomaly implies that the change in the electronic density of states is less than 2 states/eV.

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