Fingerprints of Spin-Orbital Physics in Crystalline O$_2$

Details Fingerprints of Spin-Orbital Physics in Crystalline O$_2$ Fingerprints of Spin-Orbital Physics in Crystalline O$_2$

2006-12-19

arxiv.org/abs/cond-mat/0612475v1

New J. Phys. 10 (2008) 013035

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures, 1 table

Scientific paper

10.1088/1367-2630/10/1/013035

The alkali hyperoxide KO$_2$ is a molecular analog of strongly-correlated systems, comprising of orbitally degenerate magnetic O$_2^-$ ions. Using first-principles electronic structure calculations, we set up an effective spin-orbital model for the low-energy \textit{molecular} orbitals and argue that many anomalous properties of KO$_2$ replicate the status of its orbital system in various temperature regimes.

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