Magnetic ground state of coupled edge-sharing CuO2 spin chains |
| |
Authors: | Schwingenschlögl U Schuster C |
| |
Institution: | Institut für Physik, Universit?t Augsburg, 86135 Augsburg, Germany. |
| |
Abstract: | By means of density functional theory, we investigate the magnetic ground state of edge-sharing CuO2 spin chains, as found in the (La,Ca,Sr)14Cu24O41 system, for instance. Our data rely on spin-polarized electronic structure calculations including on-site interaction local density approximation plus the multiorbital mean-field Hubbard model (LDA+U)] and an effective model for the interchain coupling. Strong doping dependence of the magnetic order is characteristic for edge-sharing CuO2 spin chains. We determine the ground state magnetic structure as function of the spin-chain filling and quantify the competing exchange interactions. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|