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  Magnetic Order and Dynamics in an Orbitally Degenerate Ferromagnetic Insulator

Ulrich, C., Khaliullin, G., Okamoto, S., Reehuis, M., Ivanov, A., He, H., et al. (2002). Magnetic Order and Dynamics in an Orbitally Degenerate Ferromagnetic Insulator. Physical Review Letters, 89(16): 167202.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-EF1B-8 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-EF1C-7
Genre: Journal Article

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 Creators:
Ulrich, C.1, 2, Author           
Khaliullin, G.1, Author           
Okamoto, S., Author
Reehuis, M.1, Author           
Ivanov, A., Author
He, H.3, 4, Author           
Taguchi, Y., Author
Tokura, Y., Author
Keimer, B.1, Author           
Affiliations:
1Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370480              
2Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370497              
3Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370483              
4Scientific Facility Crystal Growth (Masahiko Isobe), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370496              

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 Abstract: Neutron scattering was used to determine the spin structure and
the magnon spectrum of the Mott-Hubbard insulator YTiO3. The
magnetic structure is complex, comprising substantial G-type
and A-type antiferromagnetic components in addition to the
predominant ferromagnetic component. The magnon spectrum, on
the other hand, is gapless and nearly isotropic. We show that
these findings are inconsistent with the orbitally ordered
states thus far proposed for YTiO3 and discuss general
implications for a theoretical description of exchange
interactions in orbitally degenerate systems.

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Language(s): eng - English
 Dates: 2002
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 7130
ISI: 000178384300042
 Degree: -

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Title: Physical Review Letters
Source Genre: Journal
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Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 89 (16) Sequence Number: 167202 Start / End Page: - Identifier: ISSN: 0031-9007