Hall effect in Sr14-xCaxCu24O41

Tafra E; Korin-Hamzic B; Basletic MHamzic ADressel MAkimitsu J

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Hall effect in Sr14-xCaxCu24O41

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We present Hall effect measurements of two-leg ladder Sr14-xCaxCu24O41 (0 10). They are the first superconducting copper oxides (superconductivity occurs under pressure for x>10) without the CuO2 planes, characteristic for high-temperature superconductors. The question of charge dynamics and hole distribution between the ladders and chains is still open. Our Hall effect results show typical semiconducting behavior for x<10. The x = 11.5 compound shows metallic behavior and our Hall effect results match qualitatively the behavior found in high-T-c cuprates. We have determined the effective number of carriers and its dependence on composition (x) and compared it to the number of holes in the ladders obtained by other experimental techniques at room temperature.

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来源
《Physica, B. Condensed Matter》 |2009年第4期|385-388|共4页
作者
Tafra E; Korin-Hamzic B; Basletic MHamzic ADressel MAkimitsu J;
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作者单位

Fac Phys, Dept Phys, HR-10002 Zagreb, Croatia.;

Inst Phys, HR-10001 Zagreb, Croatia.;

Univ Stuttgart, Inst Phys 1, D-70550 Stuttgart, Germany.Aoyama Gakuin Univ, Dept Phys, Kanagawa, Japan.;

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正文语种英语
中图分类物理学;
关键词
Hole-doped quasi-one-dimensional cuprates; Spin-ladders; Hall effect;

Hall effect in Sr14-xCaxCu24O41

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