Impurity effects in quasiparticle spectrum of high-Tc superconductors (Review Article)

Автор(и)

  • Yu.G. Pogorelov IFIMUP/Departamento de Física, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
  • M.C. Santos Departamento de Física, Universidade de Coimbra, R. Larga, Coimbra, 3004-535, Portugal
  • V.M. Loktev Bogolubov Institute for Theoretical Physics, NAN of Ukraine, 14b Metrologichna Str., 03143 Kiev, Ukraine

DOI:

https://doi.org/10.1063/1.3651472

Ключові слова:

high-Tc superconductors, impurity states, group expansions in interacting impurity centers.

Анотація

The revision is made of Green function methods that describe the dynamics of electronic quasiparticles in disordered superconducting systems with d-wave symmetry of order parameter. Various types of impurity perturbations are analyzed within the simplest T-matrix approximation. The extension of the common selfconsistent T-matrix approximation (SCTMA) to the so-called group expansions in clusters of interacting impurity centers is discussed and hence the validity criteria for SCTMA are established. A special attention is payed to the formation of impurity resonance states and localized states near the characteristic points of energy spectrum, corresponding to nodal points on the Fermi surface.

Завантаження

Дані завантаження ще не доступні.

Downloads

Опубліковано

2011-06-21

Як цитувати

(1)
Pogorelov, Y.; Santos, M.; Loktev, V. Impurity Effects in Quasiparticle Spectrum of High-Tc Superconductors (Review Article):. Fiz. Nizk. Temp. 2011, 37, 803-828.

Номер

Розділ

Статті

Статті цього автора (авторів), які найбільше читають

1 2 3 4 5 6 > >>