A new triclinic modification of the pyrochlore-type KOs2O6 superconductor
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چکیده
منابع مشابه
Novel vortex distribution in the β-pyrochlore superconductor KOs2O6
By utilizing the micro-Hall probe array, we study the superconducting and the vortex states in a single crystal of KOs2O6 near the first-order transition at Tp ∼ 8 K, which is associated with a change in the rattling motion of K ions. We show that below the first-order transition, the lower critical field exhibits a distinct decrease, suggesting that the electron-phonon coupling is weakened bel...
متن کاملEffects of Rattling Phonons on the Dynamics of Quasiparticle Excitation in the -Pyrochlore KOs2O6 Superconductor
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Correlation effects and structural dynamics in the b-pyrochlore superconductor KOs2O6
Electronic, magnetic, and dynamical properties of superconducting b-pyrochlore KOs2O6 and related RbOs2O6 and CsOs2O6 compounds are calculated and compared with experiment and contrasted with structurally related spinel pyrochlores. The calculated susceptibility Stoner enhancement (110%) and thermal mass enhancement l=2.5–3 reflect moderate but perhaps important Coulomb correlations. The K+ ion...
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ژورنال
عنوان ژورنال: Journal of Solid State Chemistry
سال: 2009
ISSN: 0022-4596
DOI: 10.1016/j.jssc.2008.11.003