dc.contributor.author | Popovic, Zoran S. | eng |
dc.contributor.author | Satpathy, Sashi Sekhar, 1956- | eng |
dc.date.issued | 2002 | eng |
dc.description | doi:10.1063/1.1456435 | eng |
dc.description.abstract | The stability of the charge-stacked structure vis-à-vis the charge-alternate structure in the half-doped manganites is studied with a model that includes electronic kinetic energy, onsite and intersite Coulomb interactions, the Jahn-Teller energy, and the antiferromagnetic superexchange between the manganese core spins. It is shown that for a single zigzag chain, the electronic kinetic energy stabilizes the standard chain, with Mn3+ at the bridge site and Mn4+ at the corner site, over the “reversed” zigzag chain with the two Mn valences interchanged. The electronic kinetic energy and magnetic interactions stabilize the three-dimensional charge-stacked structure, while a large intersite Coulomb interaction V⩾Vc would stabilize the charge-alternate structure. It is argued that the magnitude of V is small enough that the charge-stacked structure is stabilized in the half-doped manganites such as La1/2Ca1/2MnO3. | eng |
dc.description.sponsorship | This work was supported by the Department of Energy under Contract No. DOE FG02-00E0045818. | eng |
dc.identifier.citation | J. Appl. Phys. 91, 8132 (2002) | eng |
dc.identifier.issn | 0021-8979 | eng |
dc.identifier.uri | http://hdl.handle.net/10355/9435 | eng |
dc.language | English | eng |
dc.publisher | American Institute of Physics | 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 | exchange and superexchange interactions | eng |
dc.subject | lanthanum compounds | eng |
dc.subject | valence fluctuation | eng |
dc.subject.lcsh | Antiferromagnetism | eng |
dc.subject.lcsh | Calcium compounds | eng |
dc.subject.lcsh | Magnetoresistance | eng |
dc.title | Charge stacking in the half-doped manganites | eng |
dc.type | Article | eng |