Superconductivity-induced anomalies in the spin excitation spectra of underdoped YBa2Cu3O6+x

H. F. Fong; B. Keimer; D. L. Milius; Ilhan A. Aksay

doi:10.1103/PhysRevLett.78.713

Superconductivity-induced anomalies in the spin excitation spectra of underdoped YBa₂Cu₃O_6+x

H. F. Fong, B. Keimer, D. L. Milius, Ilhan A. Aksay

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Abstract

Polarized and unpolarized neutron scattering have been used to determine the effect of superconductivity on the magnetic excitation spectra of YBa₂Cu₃O_6.5 (T_c = 52K) and YBa₂Cu₃O_6.7 (T_c = 67K). Pronounced enhancements of the spectral weight centered around 25 and 33 meV, respectively, are observed below T_c in both crystals, compensated predominantly by a loss of spectral weight at higher energies. The data provide important clues to the origin of the 40 meV magnetic resonance peak in YBa₂Cu₃O₇.

Original language	English (US)
Pages (from-to)	713-716
Number of pages	4
Journal	Physical review letters
Volume	78
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.78.713
State	Published - Jan 27 1997

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.78.713

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title = "Superconductivity-induced anomalies in the spin excitation spectra of underdoped YBa2Cu3O6+x",

abstract = "Polarized and unpolarized neutron scattering have been used to determine the effect of superconductivity on the magnetic excitation spectra of YBa2Cu3O6.5 (Tc = 52K) and YBa2Cu3O6.7 (Tc = 67K). Pronounced enhancements of the spectral weight centered around 25 and 33 meV, respectively, are observed below Tc in both crystals, compensated predominantly by a loss of spectral weight at higher energies. The data provide important clues to the origin of the 40 meV magnetic resonance peak in YBa2Cu3O7.",

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AU - Fong, H. F.

AU - Keimer, B.

AU - Milius, D. L.

AU - Aksay, Ilhan A.

PY - 1997/1/27

Y1 - 1997/1/27

N2 - Polarized and unpolarized neutron scattering have been used to determine the effect of superconductivity on the magnetic excitation spectra of YBa2Cu3O6.5 (Tc = 52K) and YBa2Cu3O6.7 (Tc = 67K). Pronounced enhancements of the spectral weight centered around 25 and 33 meV, respectively, are observed below Tc in both crystals, compensated predominantly by a loss of spectral weight at higher energies. The data provide important clues to the origin of the 40 meV magnetic resonance peak in YBa2Cu3O7.

AB - Polarized and unpolarized neutron scattering have been used to determine the effect of superconductivity on the magnetic excitation spectra of YBa2Cu3O6.5 (Tc = 52K) and YBa2Cu3O6.7 (Tc = 67K). Pronounced enhancements of the spectral weight centered around 25 and 33 meV, respectively, are observed below Tc in both crystals, compensated predominantly by a loss of spectral weight at higher energies. The data provide important clues to the origin of the 40 meV magnetic resonance peak in YBa2Cu3O7.

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Superconductivity-induced anomalies in the spin excitation spectra of underdoped YBa₂Cu₃O_6+x

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