Anomalous dynamical effects in calcite CaCO3

被引：13

作者：

Harris, MJ ^{[1
]}

Dove, MT

Swainson, IP

Hagen, ME

机构：

[1] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[2] Univ Cambridge, Dept Earth Sci, Mineral Phys Grp, Cambridge CB2 3EQ, England

[3] Steacie Inst Mol Sci, Neutron Program Mat Res, Natl Res Council, Chalk River Labs, Chalk River, ON K0J 1P0, Canada

[4] Univ Keele, Dept Phys, Keele ST5 5BG, Staffs, England

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1998年 / 10卷 / 25期

关键词：

D O I：

10.1088/0953-8984/10/25/002

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present the results of an inelastic neutron scattering study of calcite. A continuum of excitations is observed, coupled with a soft phonon mode. Similar excitation spectra have been found in a number of other materials, due to electronic effects. However, calcite is an insulator, and we suggest that our results can instead be explained by a rather unexpected solution of the conventional picture that arises from coupling between phonon and relaxation modes.

引用

页码：L423 / L429

页数：7

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