Observation of phonon softening at the superconducting transition in Bi2Sr2CaCu2O8

H. A. Mook; M. Mostoller; J. A. Harvey; N. W. Hill; B. C. Chakoumakos; B. C. Sales

doi:10.1103/PhysRevLett.65.2712

Observation of phonon softening at the superconducting transition in Bi2Sr2CaCu2O8

H. A. Mook, M. Mostoller, J. A. Harvey, N. W. Hill, B. C. Chakoumakos, B. C. Sales

Single Crystal Diffraction

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Abstract

Resonant neutron-absorption spectroscopy has been used to determine the temperature dependence of the average kinetic energy E of the Cu in Bi2Sr2CaCu2O8 for the directions along and perpendicular to the c axis. E is directly related to the Cu phonon density of states and shows essentially normal behavior as a function of temperature for the c-axis direction. However, a sudden drop in E is observed at the superconducting transition for the motions in the Cu-O planes.

Original language	English
Pages (from-to)	2712-2715
Number of pages	4
Journal	Physical Review Letters
Volume	65
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.65.2712
State	Published - 1990

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title = "Observation of phonon softening at the superconducting transition in Bi2Sr2CaCu2O8",

abstract = "Resonant neutron-absorption spectroscopy has been used to determine the temperature dependence of the average kinetic energy E of the Cu in Bi2Sr2CaCu2O8 for the directions along and perpendicular to the c axis. E is directly related to the Cu phonon density of states and shows essentially normal behavior as a function of temperature for the c-axis direction. However, a sudden drop in E is observed at the superconducting transition for the motions in the Cu-O planes.",

author = "Mook, {H. A.} and M. Mostoller and Harvey, {J. A.} and Hill, {N. W.} and Chakoumakos, {B. C.} and Sales, {B. C.}",

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AU - Mook, H. A.

AU - Mostoller, M.

AU - Harvey, J. A.

AU - Hill, N. W.

AU - Chakoumakos, B. C.

AU - Sales, B. C.

PY - 1990

Y1 - 1990

N2 - Resonant neutron-absorption spectroscopy has been used to determine the temperature dependence of the average kinetic energy E of the Cu in Bi2Sr2CaCu2O8 for the directions along and perpendicular to the c axis. E is directly related to the Cu phonon density of states and shows essentially normal behavior as a function of temperature for the c-axis direction. However, a sudden drop in E is observed at the superconducting transition for the motions in the Cu-O planes.

AB - Resonant neutron-absorption spectroscopy has been used to determine the temperature dependence of the average kinetic energy E of the Cu in Bi2Sr2CaCu2O8 for the directions along and perpendicular to the c axis. E is directly related to the Cu phonon density of states and shows essentially normal behavior as a function of temperature for the c-axis direction. However, a sudden drop in E is observed at the superconducting transition for the motions in the Cu-O planes.

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DO - 10.1103/PhysRevLett.65.2712

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Observation of phonon softening at the superconducting transition in Bi2Sr2CaCu2O8

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