THE LITTLE MECHANISM - A CONSISTENT INTERPRETATION OF HIGH-TEMPERATURE SUPERCONDUCTIVITY Conference Paper

abstract

• We consider an excitonic model in which the electron is localized in a d orbital on a metal site, and the hole is in a linear combination of p orbitals on the surrounding oxygen on a metal with both electron and hole in an insulating LaO, BaO, etc. layer adjacent to a metallic CuO2 or BiO2 plane. Even for rather large effective dielectric constants, some of the excitons are found to be tightly bound and consequently to have sizable transition densities *e(x)h(x). We calculate the attractive carrier-carrier interaction V(q), and use it to estimate the superconducting Tc as a function of the parameters in the model. This excitonic mechanism appears to provide a natural and consistent interpretation of high-temperature superconductivity in both the cuprates and bismuthates. 1989.

authors

• Allen, Roland

published proceedings

• PHYSICA C

author list (cited authors)

• RICHERT, B. A., SCHACHINGER, E., & ALLEN, R. E.

citation count

• 0

complete list of authors

• RICHERT, BA||SCHACHINGER, E||ALLEN, RE

publication date

• December 1989

publisher

• Elsevier  Publisher

published in

• Physica C: Superconductivity and its Applications  Journal

Digital Object Identifier (DOI)

• 10.1016/0921-4534(89)90763-6

start page

• 1443

end page

• 1444

volume

• 162

issue

• PART 2

URL

• http://dx.doi.org/10.1016/0921-4534(89)90763-6