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Phonon properties of intrinsic insulating phase of the cobalt oxide superconductor NaCoO2

โœ Scribed by Prafulla K. Jha; Amos Troper; Ivan C. da Cunha Lima; Mina Talati; S.P. Sanyal


Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
711 KB
Volume
366
Category
Article
ISSN
0921-4526

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Effect of the metal-superconductor phase
โœ H.S. Obhi; E.K.H. Salje ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 444 KB

The infrared-active phonon spectra of YBa2 ( CoxCu ~ \_ x ) 307 \_ ~ ( 0 < x < 0.07 ) have been studied between 35 K and room temperature. The mode near 580 cm-~ depends sensitively on Co doping and renormalizes due to the metal-superconductor phase transition. The excess phonon frequency and absorp