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 |
|---|---|
| Pages (from-to) | 197005-197001 |
| Number of pages | 5 |
| Journal | Physical Review Letters |
| Volume | 92 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 2004 May 14 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Softening of Cu-O bond stretching phonons in tetragonal HgBa 2CuO4+δ . / Uchiyama, H.; Baron, A. Q R; Tsutsui, S.; Tanaka, Y.; Hu, W. Z.; Yamamoto, Ayako; Tajima, S.; Endoh, Y.
In: Physical Review Letters, Vol. 92, No. 19, 14.05.2004, p. 197005-197001.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Softening of Cu-O bond stretching phonons in tetragonal HgBa 2CuO4+δ
AU - Uchiyama, H.
AU - Baron, A. Q R
AU - Tsutsui, S.
AU - Tanaka, Y.
AU - Hu, W. Z.
AU - Yamamoto, Ayako
AU - Tajima, S.
AU - Endoh, Y.
PY - 2004/5/14
Y1 - 2004/5/14
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.92.197005
DO - 10.1103/PhysRevLett.92.197005
M3 - Article
VL - 92
SP - 197005
EP - 197001
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 19
ER -