Electrical properties of Cd2Re2O7 under pressure

N. Barišić, L. Forró, D. Mandrus, R. Jin, J. He, P. Fazekas

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We examine the resistivity and thermopower of single crystal specimens of the pyrochlore oxide Cd2Re2O7 at pressures up to 2 GPa. Thermopower proves to be a sensitive tool in the study of the phase diagram of Cd2Re2O7. The 200 K metal-to-metal phase transition is accompanied by a strong increase of the absolute value of the thermopower. A weaker anomaly allows us to identify a second phase transition at 125 K. Following the temperature dependence of this anomaly, we obtain the corresponding phase boundary up to 1.2 GPa, and argue that it must drop to T = 0 before p reaches 1.8 GPa. There is a wide temperature range where the electrical properties are fairly sensitive to pressure, indicating the strong coupling of the electronic degrees of freedom to the lattice.

Original languageEnglish
Article number245112
Pages (from-to)2451121-2451128
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number24
Publication statusPublished - Jun 2003

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Thermoelectric power
Electric properties
electrical properties
anomalies
Phase transitions
Metals
metals
degrees of freedom
phase diagrams
Degrees of freedom (mechanics)
Phase boundaries
Oxides
temperature dependence
electrical resistivity
Phase diagrams
oxides
single crystals
electronics
Single crystals
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Barišić, N., Forró, L., Mandrus, D., Jin, R., He, J., & Fazekas, P. (2003). Electrical properties of Cd2Re2O7 under pressure. Physical Review B - Condensed Matter and Materials Physics, 67(24), 2451121-2451128. [245112].

Electrical properties of Cd2Re2O7 under pressure. / Barišić, N.; Forró, L.; Mandrus, D.; Jin, R.; He, J.; Fazekas, P.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 67, No. 24, 245112, 06.2003, p. 2451121-2451128.

Research output: Contribution to journalArticle

Barišić, N, Forró, L, Mandrus, D, Jin, R, He, J & Fazekas, P 2003, 'Electrical properties of Cd2Re2O7 under pressure', Physical Review B - Condensed Matter and Materials Physics, vol. 67, no. 24, 245112, pp. 2451121-2451128.
Barišić N, Forró L, Mandrus D, Jin R, He J, Fazekas P. Electrical properties of Cd2Re2O7 under pressure. Physical Review B - Condensed Matter and Materials Physics. 2003 Jun;67(24):2451121-2451128. 245112.
Barišić, N. ; Forró, L. ; Mandrus, D. ; Jin, R. ; He, J. ; Fazekas, P. / Electrical properties of Cd2Re2O7 under pressure. In: Physical Review B - Condensed Matter and Materials Physics. 2003 ; Vol. 67, No. 24. pp. 2451121-2451128.
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