Semiconductivity in the double-zigzag-chain complex oxide RE 2Ba2CuPtO8 (RE identical to Y, Er, Ho)

Naoki Toyota; P. Koorevaar; J. Van Der Berg; P. H. Kes; J. A. Mydosh; T. Shishido; Y. Saito; N. Kuroda; K. Ukei; T. Sasaki; T. Fukuda

doi:10.1088/0953-8984/1/23/019

Semiconductivity in the double-zigzag-chain complex oxide RE ₂Ba₂CuPtO₈ (RE identical to Y, Er, Ho)

Naoki Toyota, P. Koorevaar, J. Van Der Berg, P. H. Kes, J. A. Mydosh, T. Shishido, Y. Saito, N. Kuroda, K. Ukei, T. Sasaki, T. Fukuda

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

4 Citations (Scopus)

Abstract

The temperature dependence of electrical conductance has been measured on single crystals of the newly discovered oxide compound RE₂Ba ₂CuPtO₈ (RE identical to Y, Er, Ho). This Pt- containing oxide is orthorhombic and has a characteristic double-zigzag chain of -O ²-Pt⁴⁺-O²-Cu²⁺-O²- in columns running parallel to the b axis, which is the growth direction of the rectangular-shaped long-bar single crystals. All these compounds are found to be semiconductors with energy gaps of about 0.2-0.4 eV. They exhibit conductances proportional to exp(-T^-12/) rather than the thermally activated exp(-T^-1) dependence. Such behaviour is discussed in terms of two models, namely one-dimensional variable-range hopping and the lattice-vibration-induced band-broadening effect.

Original language	English
Article number	019
Pages (from-to)	3721-3726
Number of pages	6
Journal	Journal of Physics: Condensed Matter
Volume	1
Issue number	23
DOIs	https://doi.org/10.1088/0953-8984/1/23/019
Publication status	Published - 1989 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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Semiconductivity in the double-zigzag-chain complex oxide RE ₂Ba₂CuPtO₈ (RE identical to Y, Er, Ho). / Toyota, Naoki; Koorevaar, P.; Van Der Berg, J.; Kes, P. H.; Mydosh, J. A.; Shishido, T.; Saito, Y.; Kuroda, N.; Ukei, K.; Sasaki, T.; Fukuda, T.

In: Journal of Physics: Condensed Matter, Vol. 1, No. 23, 019, 01.12.1989, p. 3721-3726.

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

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abstract = "The temperature dependence of electrical conductance has been measured on single crystals of the newly discovered oxide compound RE2Ba 2CuPtO8 (RE identical to Y, Er, Ho). This Pt- containing oxide is orthorhombic and has a characteristic double-zigzag chain of -O 2-Pt4+-O2-Cu2+-O2- in columns running parallel to the b axis, which is the growth direction of the rectangular-shaped long-bar single crystals. All these compounds are found to be semiconductors with energy gaps of about 0.2-0.4 eV. They exhibit conductances proportional to exp(-T-12/) rather than the thermally activated exp(-T-1) dependence. Such behaviour is discussed in terms of two models, namely one-dimensional variable-range hopping and the lattice-vibration-induced band-broadening effect.",

author = "Naoki Toyota and P. Koorevaar and {Van Der Berg}, J. and Kes, {P. H.} and Mydosh, {J. A.} and T. Shishido and Y. Saito and N. Kuroda and K. Ukei and T. Sasaki and T. Fukuda",

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T1 - Semiconductivity in the double-zigzag-chain complex oxide RE 2Ba2CuPtO8 (RE identical to Y, Er, Ho)

AU - Toyota, Naoki

AU - Koorevaar, P.

AU - Van Der Berg, J.

AU - Kes, P. H.

AU - Mydosh, J. A.

AU - Shishido, T.

AU - Saito, Y.

AU - Kuroda, N.

AU - Ukei, K.

AU - Sasaki, T.

AU - Fukuda, T.

PY - 1989/12/1

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N2 - The temperature dependence of electrical conductance has been measured on single crystals of the newly discovered oxide compound RE2Ba 2CuPtO8 (RE identical to Y, Er, Ho). This Pt- containing oxide is orthorhombic and has a characteristic double-zigzag chain of -O 2-Pt4+-O2-Cu2+-O2- in columns running parallel to the b axis, which is the growth direction of the rectangular-shaped long-bar single crystals. All these compounds are found to be semiconductors with energy gaps of about 0.2-0.4 eV. They exhibit conductances proportional to exp(-T-12/) rather than the thermally activated exp(-T-1) dependence. Such behaviour is discussed in terms of two models, namely one-dimensional variable-range hopping and the lattice-vibration-induced band-broadening effect.

AB - The temperature dependence of electrical conductance has been measured on single crystals of the newly discovered oxide compound RE2Ba 2CuPtO8 (RE identical to Y, Er, Ho). This Pt- containing oxide is orthorhombic and has a characteristic double-zigzag chain of -O 2-Pt4+-O2-Cu2+-O2- in columns running parallel to the b axis, which is the growth direction of the rectangular-shaped long-bar single crystals. All these compounds are found to be semiconductors with energy gaps of about 0.2-0.4 eV. They exhibit conductances proportional to exp(-T-12/) rather than the thermally activated exp(-T-1) dependence. Such behaviour is discussed in terms of two models, namely one-dimensional variable-range hopping and the lattice-vibration-induced band-broadening effect.

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Semiconductivity in the double-zigzag-chain complex oxide RE ₂Ba₂CuPtO₈ (RE identical to Y, Er, Ho)

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