Effective Mass of Bound and Resonant Two-Electron Pairs in a Simple Cubic Lattice

M. Bak
2015 Acta Physica Polonica. A  
Eective masses m * of bound 2-electron pairs on a simple cubic lattice were investigated within tUWJ model within symmetry channels. Linear increase of m * with |W | for intersite pairs and nonlinear behavior and sign change of m * in case of pairs with on-site component were found. |m * | turned out to be larger than twice free electron mass.
doi:10.12693/aphyspola.127.290 fatcat:uom6b6cx4jeshcjkzf34dabcie