1201.6435 (Hang Dong)

Existence of electronic dipole lattice on CuO2 plane of cuprate
superconductor    [PDF]

Hang Dong

Almost all the existing theories about cuprate superconductor imply a common
hypothesis that, on CuO2 plane, the charge of Cu-O ions is opposite of that of
carriers, and is homogenously distributed. In fact, the ion charge distributes
on Cu-O ions with fixed position, and the position difference of Cu-O ions
slightly violates homogenous electricity distribution. Around optimum doping,
since the low concentration of ions, the violations can be treated as a
perturbation. It is proved that, in such situation, the ion lattice can be seen
as a combination of regular lattice and electronic dipole lattice. The
electronic dipole lattice comes from the position difference of Cu-O ions, is
the innate character of CuO2 plane. The character of cuprate superconductor,
such as pairing mechanism, bell-shaped phase diagram, pseudogap, d-wave
symmetry, and linear temperature dependence of normal state resistivity, is
tersely interpreted in consideration of electronic dipole lattice, and can be
seen as the proof of the existence of electronic dipole lattice.

View original: http://arxiv.org/abs/1201.6435