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Two-dimensional charge fluctuation in $$beta$$-Na$$_{0.33}$$V$$_{2}$$O$$_{5}$$

Owada, Kenji; Yamauchi, Toru*; Fujii, Yasuhiko*; Ueda, Yutaka*

We have investigated the critical phenomena of the metal-to-insulator (MI) transition of $$beta$$-Na$$_{0.33}$$V$$_{2}$$O$$_{5}$$. The critical exponent $$beta$$ of 0.226(3) and anisotropic diffuse scattering suggest that the MI transition of $$beta$$-Na$$_{0.33}$$V$$_{2}$$O$$_{5}$$ is two-dimensional in nature and that the dimension of the order parameter is not Ising. The non-Ising-like order parameter indicates that the MI transition is not a simple order-disorder type such as that of $$alpha$$'-NaV$$_{2}$$O$$_{5}$$ but charge-density-wave-like, where the valence at each V site is continuous and the arrangement is modulated. This closely corresponds to the situation predicted by neutron diffraction measurements and NMR measurements.

Language

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English

Journal

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Physical Review B

Volume

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85

Number

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13

Pages

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p.134102_1 - 134102_4

Publication Year/Month

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2012/04

Meeting title

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Held date

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Location (city)

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1103/PhysRevB.85.134102

DOI for research data

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Keywords

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no keyword

Research Facility

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SPring-8(大型放射光施設)

Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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東京大学; 総合科学研究機構

Accesses

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- Accesses

InCites™

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Percentile:38.32

Category:Materials Science, Multidisciplinary

Altmetrics

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