Phonon and magnetic neutron scattering at 41 meV in YBa2Cu3O7

Hung Fai Fong; B. Keimer; P. W. Anderson; D. Reznik; F. Doǧan; Ilhan A. Aksay

doi:10.1103/PhysRevLett.75.316

Phonon and magnetic neutron scattering at 41 meV in YBa2Cu3O7

Hung Fai Fong, B. Keimer, P. W. Anderson, D. Reznik, F. Doǧan, Ilhan A. Aksay

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Abstract

We report inelastic neutron scattering measurements at excitation energies Latin small letter h with strokeω∼41 meV in YBa2Cu3O7. We separate magnetic and phonon contributions to the scattering cross section by a detailed analysis of the momentum dependence of the scattered intensity. The previously reported broad peak around q=(π/a,π/a) in the normal state can be entirely accounted for by a phonon which primarily involves vibrations of the in-plane oxygen. Magnetic scattering centered around 41 meV and q=(π/a,π/a) appears in the superconducting state only. Theoretical implications of these findings are discussed.

Original language	English (US)
Pages (from-to)	316-319
Number of pages	4
Journal	Physical review letters
Volume	75
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.75.316
State	Published - 1995

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.75.316

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title = "Phonon and magnetic neutron scattering at 41 meV in YBa2Cu3O7",

abstract = "We report inelastic neutron scattering measurements at excitation energies Latin small letter h with strokeω∼41 meV in YBa2Cu3O7. We separate magnetic and phonon contributions to the scattering cross section by a detailed analysis of the momentum dependence of the scattered intensity. The previously reported broad peak around q=(π/a,π/a) in the normal state can be entirely accounted for by a phonon which primarily involves vibrations of the in-plane oxygen. Magnetic scattering centered around 41 meV and q=(π/a,π/a) appears in the superconducting state only. Theoretical implications of these findings are discussed.",

author = "Fong, {Hung Fai} and B. Keimer and Anderson, {P. W.} and D. Reznik and F. Doǧan and Aksay, {Ilhan A.}",

year = "1995",

doi = "10.1103/PhysRevLett.75.316",

language = "English (US)",

volume = "75",

pages = "316--319",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

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TY - JOUR

T1 - Phonon and magnetic neutron scattering at 41 meV in YBa2Cu3O7

AU - Fong, Hung Fai

AU - Keimer, B.

AU - Anderson, P. W.

AU - Reznik, D.

AU - Doǧan, F.

AU - Aksay, Ilhan A.

PY - 1995

Y1 - 1995

N2 - We report inelastic neutron scattering measurements at excitation energies Latin small letter h with strokeω∼41 meV in YBa2Cu3O7. We separate magnetic and phonon contributions to the scattering cross section by a detailed analysis of the momentum dependence of the scattered intensity. The previously reported broad peak around q=(π/a,π/a) in the normal state can be entirely accounted for by a phonon which primarily involves vibrations of the in-plane oxygen. Magnetic scattering centered around 41 meV and q=(π/a,π/a) appears in the superconducting state only. Theoretical implications of these findings are discussed.

AB - We report inelastic neutron scattering measurements at excitation energies Latin small letter h with strokeω∼41 meV in YBa2Cu3O7. We separate magnetic and phonon contributions to the scattering cross section by a detailed analysis of the momentum dependence of the scattered intensity. The previously reported broad peak around q=(π/a,π/a) in the normal state can be entirely accounted for by a phonon which primarily involves vibrations of the in-plane oxygen. Magnetic scattering centered around 41 meV and q=(π/a,π/a) appears in the superconducting state only. Theoretical implications of these findings are discussed.

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U2 - 10.1103/PhysRevLett.75.316

DO - 10.1103/PhysRevLett.75.316

M3 - Article

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AN - SCOPUS:4243544312

SN - 0031-9007

VL - 75

SP - 316

EP - 319

JO - Physical review letters

JF - Physical review letters

IS - 2

ER -

Phonon and magnetic neutron scattering at 41 meV in YBa2Cu3O7

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