Theory of antiferromagnetic pairing in cuprate superconductors (Review article)

• Опубліковано в: : Физика низких температур
• Дата: 2006
• Автор: Plakida, N.M.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2006
• Теми: Spin Models
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/120190
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Theory of antiferromagnetic pairing in cuprate
 superconductors
 (Review article) / N.M. Plakida // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 483–498. — Бібліогр.: 106 назв. — англ.

A review of the antiferromagnetic exchange and spin-fluctuation pairing theory in the cuprate
 superconductors is given. We briefly discuss a phenomenological approach and a theory in the
 limit of weak Coulomb correlations. A microscopic theory in the strong correlation limit
 is presented in more detail. In particular, results of our recently developed theory for the effective
 p–d Hubbard model and the reduced t–J model are given. We have proved that retardation effects
 for the antiferromagnetic exchange interaction are unimportant that results in pairing of all charge
 carriers in the conduction band and high Tc proportional to the Fermi energy. The spin-fluctuation
 interaction caused by kinematic interaction gives an additional contribution to the d-wave pairing.
 Dependence of Tc on the hole concentration and the lattice constant (or pressure) and an oxygen
 isotope shift are discussed.