Antiferromagnetic exchange and spin-fluctuation pairing in cuprate superconductors
نویسندگان
چکیده
منابع مشابه
Pairing symmetry in cuprate superconductors
Pairing symmetry in the cuprate superconductors is an important and controversial topic. The recent development of phase-sensitive tests, combined with the refinement of several other symmetry-sensitive techniques, has for the most part settled this controversy in favor of predominantly d-wave symmetry for a number of optimally holeand electron-doped cuprates. This paper begins by reviewing the...
متن کاملKinetic energy driven pairing in cuprate superconductors.
Pairing occurs in conventional superconductors through a reduction of the electronic potential energy accompanied by an increase in kinetic energy. In the underdoped cuprates, optical experiments show that pairing is driven by a reduction of the electronic kinetic energy. Using the dynamical cluster approximation we study superconductivity in the two-dimensional Hubbard model. We find that pair...
متن کاملd-wave pairing symmetry in cuprate superconductors
Phase-sensitive tests of pairing symmetry have provided strong evidence for predominantly d-wave pairing symmetry in both the holeand electron-doped high-Tc cuprate superconductors. Temperature dependent measurements in YBa2Cu3O7−δ (YBCO) indicate that the d-wave pairing dominates, with little if any imaginary component, at all temperatures from 0.5K through Tc. In this article we review some o...
متن کاملSpin-polarized quasiparticle transport in cuprate superconductors
The effects of spin-polarized quasiparticle transport in superconducting YBa2Cu3O7−δ (YBCO) epitaxial films are investigated by means of current injection into perovskite ferromagnet-insulatorsuperconductor (F-I-S) heterostructures. These effects are compared with the injection of simple quasiparticles into control samples of perovskite non-magnetic metal-insulator-superconductor (N-IS). System...
متن کاملFluctuation Effects And Order Parameter Symmetry In The Cuprate Superconductors
Effect of phase fluctuations on superconducting states with anisotropic order parameters is studied in a BCS like lattice model of cuprate superconductors. The degradation of the mean field transition temperature due to phase fluctuations is estimated within a Kosterlitz-Thouless scenario. Values of the interaction parameters for optimal doping, corresponding to a stable superconducting state o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics and Chemistry of Solids
سال: 2006
ISSN: 0022-3697
DOI: 10.1016/j.jpcs.2005.10.063