Neutron and Raman scattering studies of HgBa2CuO4+δ

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

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

Fingerprint

Neutron scattering
Raman scattering
neutron scattering
Raman spectra
Magnetic variables measurement
Neutron diffraction
Linewidth
Hardening
Phase transitions
Oxygen
hardening
magnetic measurement
neutron diffraction
purity
anomalies
vibration
oxygen
electronics
excitation

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., ... 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

Neutron and Raman scattering studies of HgBa2CuO4+δ. / Liou, Sy-Hwang; Li, R.; Cai, Q.; Chandrasekhar, M.; Luo, H.; Chen, M.; Yelon, W. B.; Vasiliev, A. L.; Kvam, E. P.

In: Journal of Superconductivity, Vol. 11, No. 1, 01.01.1998, p. 59-62.

Research output: Contribution to journalArticle

Liou, S-H, Li, R, Cai, Q, Chandrasekhar, M, Luo, H, Chen, M, Yelon, WB, Vasiliev, AL & Kvam, EP 1998, 'Neutron and Raman scattering studies of HgBa2CuO4+δ', Journal of Superconductivity, vol. 11, no. 1, pp. 59-62. https://doi.org/10.1023/A:1022677711855
Liou, Sy-Hwang ; Li, R. ; Cai, Q. ; Chandrasekhar, M. ; Luo, H. ; Chen, M. ; Yelon, W. B. ; Vasiliev, A. L. ; Kvam, E. P. / Neutron and Raman scattering studies of HgBa2CuO4+δ. In: Journal of Superconductivity. 1998 ; Vol. 11, No. 1. pp. 59-62.
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