Comment on ``Sodium Pyroxene NaTiSi$_2$O$_6$: Possible Haldane Spin-1 Chain System''

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dc.creatorStreltsov, S. V.
dc.creatorPopova, O. A.
dc.creatorKhomskii, D. I.
dc.date2005-12-09
dc.date2006-07-03
dc.date.accessioned2026-07-07T06:53:14Z
dc.date.available2026-07-07T06:53:14Z
dc.descriptionMagnetic and electronic properties of NaTiSi$_2$O$_6$ in low temperature phase were studied in the framework of the LDA+U approximation. We stress that neglecting correlation effects in LSDA calculations one obtains not only several times smaller value of the band gap, but also fails to describe magnetic properties of NaTiSi$_2$O$_6$. Our LDA+U results confirm formation of singlet Ti-Ti dimers in low temperature phase of NaTiSi$_2$O$_6$ driven by corresponding orbital ordering [J. Phys. Soc. Jpn. 71, 1423 (2002)], but strongly disagree with the LSDA results and interpretations of Phys. Rev. Lett. 93, 036401 (2004).
dc.description1 table. Submitted to Phys. Rev. Lett. as a Comment
dc.identifierhttps://arxiv.org/abs/cond-mat/0512195
dc.identifierhttp://arxiv.org/abs/cond-mat/0512195
dc.identifierPhys. Rev. Lett. 96, 249701 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.249701
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/105514
dc.subjectStrongly Correlated Electrons
dc.titleComment on ``Sodium Pyroxene NaTiSi$_2$O$_6$: Possible Haldane Spin-1 Chain System''
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