Superconductivity and Jahn-Teller Polarons in Titanates

被引：0
|
作者：
Arvids Stashans
Henry Pinto
Paul Sánchez
机构：
[1] Centro de Investigación en Física de la Materia Condensada,Departamento de Química, Colegio Politécnico
[2] Corporación de Física Fundamental y Aplicada,School of Physics and Astronomy
[3] Universidad San Francisco de Quito,undefined
[4] National Microelectronics Research Centre,undefined
[5] Lee Maltings,undefined
[6] Prospect Row,undefined
[7] University of Nottingham,undefined
来源：
Journal of Low Temperature Physics | 2003年 / 130卷
关键词：
Titanate; Conduction Band; Experimental Observation; Magnetic Material; BaTiO3;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The present work focuses on the superconductivity phenomenon in La-doped SrTiO3 crystal, and the Jahn-Teller (JT) polarons in BaTiO3 crystal. In the case of SrTiO3 crystal this study shows the occurrence of free electrons in the conduction band of the crystal and explains a number of the experimental results obtained for the superconducting La-doped SrTiO3 existing under 0.3K. Free electrons are found to be situated within the Ti-O planes similar as in the case of the high temperature superconducting (HTS) cuprates. Results obtained for the JT polarons in BaTiO3 crystal explain a number of experimental observations and coincide with the other results obtained independently by the polaron theory. A phenomenological model explaining a bipolaron formation in titanates is suggested and analysed in the present work.
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页码：415 / 423
页数：8
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