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 |
|---|---|
| Article number | 203601 |
| 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)
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Uchiyama, H., Baron, A. Q. R., Tsutsui, S., Tanaka, Y., Hu, W. Z., Yamamoto, A., Tajima, S., & Endoh, Y. (2004). Softening of Cu-O bond stretching phonons in tetragonal HgBa 2CuO4+δ. Physical Review Letters, 92(19), 197005-1-197005-4. [203601]. https://doi.org/10.1103/PhysRevLett.92.197005