A Mechanism of High-Tc Superconductivity Relating to Perovskite Crystal Structure

✍ Scribed by Y. S. Wang; P. Bennema; M. N. Zheng; C. M. Fu; P. van der Linden

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 317 KB
• Volume: 28
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.2170280727

✦ Synopsis

Abstract

A mechanism of high‐T~c~ superconductivity related to the perovskite crystal structure is proposed by a “phonon attenuation model”, which means that in the perovskite‐like crystal structure, a number of “ordering” vacancies or holes occur due to the non‐stoichiometric structure features. Such a reticular “spongly‐like” structure facilitates lattice thermovibration attenuation perovskite (phonon attenuation) during temperature reduction. This leads to an abrupt drop of the resistivity, owing to the conduction electrons transmitted through the media without collision with irregularities in the lattice due to the lattice thermovibration. This probably is the main reason for high‐T~c~ superconductivity of the perovskite cuprates.