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- W2030088947 abstract "We report an unusual behavior of highly extended $5d$ electrons in ${mathrm{Y}}_{2}{mathrm{Ir}}_{2}{mathrm{O}}_{7}$ belonging to the pyrochlore family of great current interest, using high-resolution photoemission spectroscopy. The experimental bulk spectra reveal signature of an intense lower Hubbard band in addition to the weak intensities in the vicinity of the Fermi level, ${ϵ}_{F}$. This provides direct evidence for strong electron correlation among the $5d$ electrons, which is in sharp contrast to the observation in other Ir compounds. The influence of electron correlation is also manifested by close to $ensuremath{mid}ϵensuremath{-}{ϵ}_{F}{ensuremath{mid}}^{2}$ dependence of spectral line shape near ${ϵ}_{F}$ of the high-resolution spectrum at $300phantom{rule{0.3em}{0ex}}mathrm{K}$. The spectral line shape evolves to a $ensuremath{mid}ϵensuremath{-}{ϵ}_{F}{ensuremath{mid}}^{1.5}$ dependence below Curie temperature, emphasizing the importance of electron-magnon coupling in the magnetically ordered phase." @default.
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- W2030088947 title "Evidence for strong<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mn>5</mml:mn><mml:mi>d</mml:mi></mml:mrow></mml:math>electron correlations in the pyrochlore<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mi mathvariant=normal>Y</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Ir</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant=normal>O</mml:mi><mml:mn>7</mml:mn></mml:msub…" @default.
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- W2030088947 doi "https://doi.org/10.1103/physrevb.77.201102" @default.
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