Orbital Correlations in Monolayer Manganites - From Spin t-J Model to Orbital t-J Model

Daghofer, M.; Oleś, A.

doi:10.12693/APhysPolA.111.497

Journal

Acta Physica Polonica A

2007 | 111 | 4 | 497-512

Article title

Orbital Correlations in Monolayer Manganites - From Spin t-J Model to Orbital t-J Model

Authors

M. Daghofer , A. Oleś

Content

Full texts:

http://przyrbwn.icm.edu.pl/APP/PDF/111/a111z409.pdf [remote]

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Languages of publication

Abstracts

On the example of monolayer manganites we show that the theoretical ideas developed long ago along the derivation of the spin t-J model from the Hubbard model are nowadays very helpful in strongly correlated oxides with partly filled degenerate orbitals. We analyze a realistic orbital t-J model for e_g electrons in La_{1-x}Sr_{1+x}MnO_4 monolayer manganites, and discuss the evolution of spin and orbital correlations under increasing doping by performing exact diagonalization of finite clusters, with electronic kinetic energy determined self-consistently at a finite temperature by classical Monte Carlo for t_{2g} spins. Several experimental results are reproduced.

Keywords

75.10.Jm 75.30.Et 75.47.Lx

Discipline

Publisher

Journal

Acta Physica Polonica A

Year

2007

Volume

111

Issue

Pages

497-512

Physical description

Dates

published

2007-04

received

2006-09-14

Contributors

author

M. Daghofer

Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, 70569 Stuttgart, Germany

author

A. Oleś

Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, 70569 Stuttgart, Germany
Marian Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

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Document Type

Publication order reference

Identifiers

DOI

10.12693/APhysPolA.111.497

YADDA identifier

bwmeta1.element.bwnjournal-article-appv111n409kz