Matches in SemOpenAlex for { <https://semopenalex.org/work/W1992255611> ?p ?o ?g. }
- W1992255611 abstract "We report an experimental study of ${text{NaCu}}_{2}{text{O}}_{2}$, a Mott insulator containing chains of edge-sharing ${text{CuO}}_{4}$ plaquettes, by polarized x-ray absorption spectroscopy (XAS), resonant magnetic x-ray scattering (RMXS), magnetic susceptibility, and pyroelectric current measurements. The XAS data show that the valence holes reside exclusively on the ${text{Cu}}^{2+}$ sites within the copper-oxide spin chains and populate a $d$ orbital polarized within the ${text{CuO}}_{4}$ plaquettes. The RMXS measurements confirm the presence of incommensurate magnetic order below a N'eel temperature of ${T}_{N}=11.5text{ }text{K}$, which was previously inferred from neutron powder-diffraction and nuclear-magnetic-resonance data. In conjunction with the magnetic-susceptibility and XAS data, they also demonstrate an ``orbital'' selection rule for RMXS that is of general relevance for magnetic-structure determinations by this technique. Dielectric property measurements reveal the absence of significant ferroelectric polarization below ${T}_{N}$, which is in striking contrast to corresponding observations on the isostructural compound ${text{LiCu}}_{2}{text{O}}_{2}$. The results are discussed in the context of current theories of multiferroicity." @default.
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- W1992255611 date "2010-02-17" @default.
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- W1992255611 title "Electronic structure, magnetic, and dielectric properties of the edge-sharing copper oxide chain compound<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mtext>NaCu</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mtext>O</mml:mtext><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>" @default.
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- W1992255611 doi "https://doi.org/10.1103/physrevb.81.085111" @default.
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