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- W2299535503 abstract "Recent experimental results have emphasized two aspects of ${mathrm{Tb}}_{2}{mathrm{Ti}}_{2}{mathrm{O}}_{7}$, which have not been taken into account in previous attempts to construct theories of ${mathrm{Tb}}_{2}{mathrm{Ti}}_{2}{mathrm{O}}_{7}$: the role of small levels of structural disorder, which appears to control the formation of a long-range ordered state of as yet unknown nature, and the importance of strong coupling between spin and lattice degrees of freedom, which results in the hybridization of crystal-field excitons and transverse acoustic phonons. In this work, we examine the juncture of these two phenomena and show that samples with strongly contrasting behavior vis-a-vis the structural disorder (i.e., with and without the transition to the ordered state), develop identical magnetoelastic coupling. We also show that the comparison between single-crystal and powder samples is more complicated than previously thought---the correlation between the lattice parameter (as a measure of superstoichiometric ${mathrm{Tb}}^{3+}$) and the existence of a specific heat peak, as observed in powder samples, does not hold for single crystals." @default.
- W2299535503 created "2016-06-24" @default.
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- W2299535503 date "2016-04-06" @default.
- W2299535503 modified "2023-09-27" @default.
- W2299535503 title "Sample independence of magnetoelastic excitations in the rare-earth pyrochlore<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi>Tb</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Ti</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></mml:mrow></mml:math>" @default.
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- W2299535503 doi "https://doi.org/10.1103/physrevb.93.144407" @default.
- W2299535503 hasPublicationYear "2016" @default.
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