Softening of Cu-O bond stretching phonon in tetragonal HgBa$_2$CuO$_{4+\delta}$

A.Q.R. Baron; A.Yamamoto; H. Uchiyama; S. Tajima; S. Tsutsui; W.-Z. Hu; Y. Endoh; Y. Tanaka

arxiv: cond-mat/0403343 · v1 · submitted 2004-03-14 · ❄️ cond-mat.supr-con · cond-mat.str-el

Softening of Cu-O bond stretching phonon in tetragonal HgBa₂CuO_(4+δ)

H. Uchiyama , A.Q.R. Baron , S. Tsutsui , Y. Tanaka , W.-Z. Hu , A.Yamamoto , S. Tajima , Y. Endoh This is my paper

classification ❄️ cond-mat.supr-con cond-mat.str-el

keywords bondcu-odeltaenergyhgbamodelsofteningstretching

0 comments

read the original abstract

Phonons in nearly optimally doped HgBa$_2$CuO$_{4+\delta}$ were studied by inelastic X-ray scattering. The dispersion of the low energy modes is well described by a shell model, while the Cu-O bond stretching mode at high energy shows strong softening towards the zone boundary, which deviates strongly from the model. This seems to be common in the hole-doped high-$T_\mathrm{c}$ superconducting cuprates, and, based on this work, not related to a lattice distortion specific to each material.

This paper has not been read by Pith yet.

Softening of Cu-O bond stretching phonon in tetragonal HgBa₂CuO_(4+δ)

discussion (0)