Phonon dispersion relations in PrBa2Cu3O6+x (x approximate to 0.2)

C.H. Gardiner; A.T. Boothroyd; B.H. Larsen; W. Reichardt; A.A. Zhokhov; N.H. Andersen; S.J.S. Lister; A.R. Wildes

doi:10.1103/PhysRevB.69.092302

Phonon dispersion relations in PrBa₂Cu₃O₆₊_x (x approximate to 0.2)

C.H. Gardiner, A.T. Boothroyd, B.H. Larsen, W. Reichardt, A.A. Zhokhov, N.H. Andersen, S.J.S. Lister, A.R. Wildes

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Abstract

We report measurements of the phonon dispersion relations in nonsuperconducting, oxygen-deficient PrBa2Cu3O6+x (xapproximate to0.2) by inelastic neutron scattering. The data are compared with a model of the lattice dynamics based on a common interatomic potential. Good agreement is achieved for all but two phonon branches, which are significantly softer than predicted. These modes are found to arise predominantly from motion of the oxygen ions in the CuO2 planes. Analogous modes in YBa2Cu3O6 are well described by the common interatomic potential model.

Original language	English
Journal	Physical Review B Condensed Matter
Volume	69
Issue number	9
Pages (from-to)	092302
Number of pages	4
ISSN	0163-1829
DOIs	https://doi.org/10.1103/PhysRevB.69.092302
Publication status	Published - 2004

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abstract = "We report measurements of the phonon dispersion relations in nonsuperconducting, oxygen-deficient PrBa2Cu3O6+x (xapproximate to0.2) by inelastic neutron scattering. The data are compared with a model of the lattice dynamics based on a common interatomic potential. Good agreement is achieved for all but two phonon branches, which are significantly softer than predicted. These modes are found to arise predominantly from motion of the oxygen ions in the CuO2 planes. Analogous modes in YBa2Cu3O6 are well described by the common interatomic potential model.",

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T1 - Phonon dispersion relations in PrBa2Cu3O6+x (x approximate to 0.2)

AU - Gardiner, C.H.

AU - Boothroyd, A.T.

AU - Larsen, B.H.

AU - Reichardt, W.

AU - Zhokhov, A.A.

AU - Andersen, N.H.

AU - Lister, S.J.S.

AU - Wildes, A.R.

PY - 2004

Y1 - 2004

N2 - We report measurements of the phonon dispersion relations in nonsuperconducting, oxygen-deficient PrBa2Cu3O6+x (xapproximate to0.2) by inelastic neutron scattering. The data are compared with a model of the lattice dynamics based on a common interatomic potential. Good agreement is achieved for all but two phonon branches, which are significantly softer than predicted. These modes are found to arise predominantly from motion of the oxygen ions in the CuO2 planes. Analogous modes in YBa2Cu3O6 are well described by the common interatomic potential model.

AB - We report measurements of the phonon dispersion relations in nonsuperconducting, oxygen-deficient PrBa2Cu3O6+x (xapproximate to0.2) by inelastic neutron scattering. The data are compared with a model of the lattice dynamics based on a common interatomic potential. Good agreement is achieved for all but two phonon branches, which are significantly softer than predicted. These modes are found to arise predominantly from motion of the oxygen ions in the CuO2 planes. Analogous modes in YBa2Cu3O6 are well described by the common interatomic potential model.

KW - 5-I nano

U2 - 10.1103/PhysRevB.69.092302

DO - 10.1103/PhysRevB.69.092302

M3 - Journal article

SN - 0163-1829

VL - 69

SP - 092302

JO - Physical Review B Condensed Matter

JF - Physical Review B Condensed Matter

IS - 9