Cu-O bond-stretching vibrations in YBa(2)Cu(3)0(7) studied by inelastic neutron scattering

被引：45

作者：

Reichardt, W

机构：

[1] Forschungszentrum Karlsruhe, Institut für Nukleare Festkörperphysik, D-76021 Karlsruhe

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 1996年 / 105卷 / 3-4期

关键词：

D O I：

10.1007/BF00768482

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Inelastic neutron experiments confirm the previously reported anomalous nature of the planar oxygen bond-stretching vibrations and furnish further details. It is shown that the frequency of the linear breathing mode is renormalized by 5 THz compared to insulating YBa2Cu3O6 Studies of the Cu1-apical O bond-stretching vibrations demonstrate that frequencies, line-widths and phonon intensities can well be understood within the framework of a harmonic lattice dynamical model. This rules out predictions of a double well potential and strong anharmonitity for this type of vibration.

引用

页码：807 / 812

页数：6

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