Abstract
The phonon dispersion of Hg1201 was studied using inelastic x-ray scattering. The crystallinity was examined using x-ray diffraction, and four spherically curved analyzer crystals were used on the 10 m horizontal arm to analyze the scattered radiation. Magnetic susceptibility measurement showed a sharp superconductivity transition at 94 K, indicating that the sample was nearly optimally doped. The results show that the shell model described well the dispersion of the low-energy modes, while the Cu-O bond stretching mode at high energy showed strong softening towards the zone boundary, deviating strongly from the model.
Original language | English |
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Article number | 197005 |
Pages (from-to) | 197005-1-197005-4 |
Journal | Physical Review Letters |
Volume | 92 |
Issue number | 19 |
DOIs | |
Publication status | Published - 2004 May 14 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)