Neutron and Raman scattering studies of HgBa2CuO4+δ

S. H. Liou, R. Li, Q. Cai, M. Chandrasekhar, H. Luo, M. Chen, W. B. Yelon, A. L. Vasiliev, E. P. Kvam

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Abstract

The HgBa2CuO4+δ sample was characterized by Neutron diffraction and magnetic measurements. Both of the measurements indicate a high purity of the sample. Raman measurement was performed on a HgBa2CuO4+δ compound of Tc = 96 K. The apical oxygen vibration at 592 cm-1 was found to show (a) an above Tc anomaly, and (b) frequency hardening and linewidth broadening below the superconducting phase transition. The latter is attributed to the coupling of the phonon to the electronic excitation and related to the opening of the superconducting gap below the phonon frequency.

Original languageEnglish (US)
Pages (from-to)59-62
Number of pages4
JournalJournal of Superconductivity
Volume11
Issue number1
DOIs
StatePublished - Jan 1 1998

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Keywords

  • Neutron diffraction
  • Raman scattering
  • Superconductors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Liou, S. H., Li, R., Cai, Q., Chandrasekhar, M., Luo, H., Chen, M., Yelon, W. B., Vasiliev, A. L., & Kvam, E. P. (1998). Neutron and Raman scattering studies of HgBa2CuO4+δ. Journal of Superconductivity, 11(1), 59-62. https://doi.org/10.1023/A:1022677711855