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Phonon anomaly of La1.85Sr0.15CuO4 studied by neutron scattering

โœ Scribed by M. Arai; K. Yamada; S. Hosoya; S. Wakimoto; K. Ubukata; M. Fujita; T. Nishijima; T. Otomo; Y. Endoh

Book ID
108023564
Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
177 KB
Volume
213-214
Category
Article
ISSN
0921-4526

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We have measured two phonon-dispersion curves above 50meV in a superconducting (T~ = 33 K) single crystal of Lal.85Sro.tsCuO4. In the normal phase (T =45 K), we show that the A, mode compatible with the Raman A, g (425 cm -1) mode is weakly dispersive, falling from 53.7 meV at the zone center to abo