Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models

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dc.creatorJackeli, G.
dc.creatorKhaliullin, G.
dc.date2008-09-26
dc.date2008-12-04
dc.date.accessioned2026-07-07T12:39:45Z
dc.date.available2026-07-07T12:39:45Z
dc.descriptionWe study the magnetic interactions in Mott-Hubbard systems with partially filled $t_{2g}$-levels and with strong spin-orbit coupling. The latter entangles the spin and orbital spaces, and leads to a rich variety of the low energy Hamiltonians that extrapolate from the Heisenberg to a quantum compass model depending on the lattice geometry. This gives way to "engineer" in such Mott insulators an exactly solvable spin model by Kitaev relevant for quantum computation. We, finally, explain "weak" ferromagnetism, with an anomalously large ferromagnetic moment, in Sr$_2$IrO$_4$.
dc.description4 pages, 4 figures; revised, to appear in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/0809.4658
dc.identifierhttp://arxiv.org/abs/0809.4658
dc.identifierPhys. Rev. Lett. 102, 017205 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.017205
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219221
dc.subjectStrongly Correlated Electrons
dc.titleMott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
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