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    Influence of doping on the spin dynamics and magnetoelectric effect in hexagonalᅠY0.7Lu0.3MnO3

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    Author
    Tian, W.; Tan, Guotai; Liu, Liu; Zhang, Jinxing; Winn, Barry; More... Hong, Tao; Fernandez-Baca, J.A.; Zhang, Chenglin; Dai, Pengcheng Less...
    Date
    2014
    Abstract
    We use inelastic neutron scattering and dielectric constant measurements to study the doping influence on the spin dynamics and magnetoelectric (ME) effect in hexagonalY0.7Lu0.3MnO3. In undoped YMnO3 and LuMnO3, the Mn trimerization distortion has been suggested to play a key role in determining the magnetic structure and the magnetoelectric effect. In Y0.7Lu0.3MnO3, at the antiferromagnetic zone center, we observed a much smaller Δ12≈0.52 meV gap (which is ∼2.5meV for both YMnO3 and LuMnO3) that coincides with a weaker in-plane dielectric anomaly at TN; both can be attributed to a weaker Mn trimerization distortion in Y0.7Lu0.3MnO3 compared to YMnO3 and LuMnO3. The results provide strong evidence that the magnitude of ME coupling is linked to the strength of the trimerization distortion, suggesting the Mn trimerization is responsible for the ME effect in Y1−yLuyMnO3.
    Citation
    Tian, W., Tan, Guotai, Liu, Liu, et al.. "Influence of doping on the spin dynamics and magnetoelectric effect in hexagonalᅠY0.7Lu0.3MnO3." Physical Review B, 89, no. 14 (2014) American Physical Society: https://doi.org/10.1103/PhysRevB.89.144417.
    Published Version
    https://doi.org/10.1103/PhysRevB.89.144417
    Type
    Journal article
    Publisher
    American Physical Society
    Citable link to this page
    https://hdl.handle.net/1911/94796
    Rights
    Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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    • Faculty Publications [4976]
    • Physics and Astronomy Publications [1769]

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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map