The phonon-quadrupole mechanism of superconducting pair formation in high-temperature superconductivity

• Main Authors: А.П. Шпак, А.С. Литовченко, О.А. Калініченко
• Format: Article
• Language: English
• Published: National Aviation University 2005-04-01
• Series: Vìsnik Nacìonalʹnogo Avìacìjnogo Unìversitetu
• Online Access: http://jrnl.nau.edu.ua/index.php/visnik/article/view/1261

<p><em> A superconducting pair in high-temperature superconductivity structure was supposed to have an electrical quadrupole moment. It was shown, that under certain conditions, at the part of acoustic phonons, conduction electrons in high-temperature superconductivity structure can form superconducting pairs, when the interaction energy of the quadrupole moment of a superconducting pair with the structure electric field exceeds the energy of Coulomb repulsion between electrons. The electrical field parameters in a CuO₂ plane of high-temperature superconductivity structure have been obtained by the method of effective point charges. The distance between electrons in superconducting pair in a CuO₂ plane have been estimated in ~ 75 ÷ 130 Å. Within the framework of the suggested model it was shown that high-temperature superconductivity IR-spectra, which were observed at 500 cm^-1, can be caused by the quadrupole resonance of superconducting pairs.</em></p>