dc.contributor.author | Zhang, Ze | eng |
dc.contributor.author | Satpathy, Sashi Sekhar, 1956- | eng |
dc.date.issued | 1991 | eng |
dc.description | URL:http://link.aps.org/doi/10.1103/PhysRevB.44.13319
DOI:10.1103/PhysRevB.44.13319 | eng |
dc.description.abstract | Using density-functional calculations, we examine the electronic structure of magnetite in the spinel crystal structure in order to gain insight into the nature of the Verwey transition. The calculated cohesive and magnetic properties are in agreement with experimental results. The magnetic structure is analyzed using a Stoner model as well as from calculations within the framework of the local-spin-density approximation to the density-functional theory. The calculations show a minority-spin band at the Fermi energy consisting of t2g orbitals on the Fe(B) sublattice. These results suggest a three-band spinless model Hamiltonian for the description of the Verwey transition. The hopping integrals and the electron interaction parameters entering the model Hamiltonian are calculated using the ''constrained'' density-functional theory. The calculated parameters are consistent with the electronic origin of the Verwey transition. | eng |
dc.description.sponsorship | The present work was supported in part by a Grant from the Weldon Spring Foundation of the University of Missouri. Numerical computations were performed at the Pittsburgh Supercomputing Center at Pittsburgh and at the National Center for Supercomputing Applications at Urbana-Champaign. | eng |
dc.identifier.citation | Phys. Rev. B 44, 13319-13331 (1991) | eng |
dc.identifier.issn | 1098-0121 | eng |
dc.identifier.uri | http://hdl.handle.net/10355/9541 | eng |
dc.language | English | eng |
dc.publisher | American Physical Society | eng |
dc.relation.ispartofcollection | University of Missouri--Columbia. College of Arts and Sciences. Department of Physics and Astronomy. Physics and Astronomy publications | eng |
dc.subject | Verwey transition | eng |
dc.subject | local spin density | eng |
dc.subject.lcsh | Density functionals | eng |
dc.subject.lcsh | Magnetite | eng |
dc.title | Electron states, magnetism, and the Verwey transition in magnetite | eng |
dc.type | Article | eng |