Anomalous dispersion of longitudinal optical phonons in Nd1.86Ce0.14CuO4+δ determined by inelastic X-ray scattering

M. D'Astuto, P. K. Mang, P. Giura, A. Shukla, P. Ghigna, A. Mirone, M. Braden, M. Greven, M. Krisch, F. Sette

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Abstract

Phonon dispersion in n-type cuprates Nd1.86Ce0.14CuO4+δ (NCCO) was analysed using inelastic x-ray scattering technique. This technique helps to overcome the need for large single crystals of high chemical and structural quality. Results showed that there is anomalous softening in the electron-doped cuprates as was found earlier in the hole-doped compounds.

Original languageEnglish (US)
Article number167002
Pages (from-to)1670021-1670024
Number of pages4
JournalPhysical review letters
Volume88
Issue number16
StatePublished - Apr 22 2002

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