Effects of oxygen-vacancies in high-temperature cuprate superconductors
College of Science
Solid State Communications
We investigate the effects of oxygen vacancies on the magnetic properties and superconducting transition temperature of high-temperature cuprate superconductors. Starting with the d-p Hamiltonian, we simultaneously employ the coherent potential approximation to account for the effects of oxygen vacancies, and the fluctuation-exchange scheme to address the copper-site Coulomb interactions. Our results show that the presence of oxygen vacancies weakens the antiferromagnetic spin fluctuations of d-electrons subsequently lowering the superconducting transition temperature. © 2005 Elsevier Ltd. All rights reserved.
Digitial Object Identifier (DOI)
Matsunaka, D., Rodulfo, E. T., & Kasai, H. (2005). Effects of oxygen-vacancies in high-temperature cuprate superconductors. Solid State Communications, 134 (5), 355-360. https://doi.org/10.1016/j.ssc.2005.01.039
High temperature superconductors; Electron-electron interactions