Comparison of the High-Frequency Magnetic Fluctuations in Insulating and Superconducting La2-xSrxCuO4

S.M. Hayden; G. Aeppli; H.A. Mook; T.G. Perring; T.E. Mason; S.W. Cheong; Z. Fisk

doi:10.1103/PhysRevLett.76.1344

Comparison of the High-Frequency Magnetic Fluctuations in Insulating and Superconducting La₂-_xSr_xCuO₄

S.M. Hayden, G. Aeppli, H.A. Mook, T.G. Perring, T.E. Mason, S.W. Cheong, Z. Fisk

Research output: Contribution to journal › Journal article › Research

Abstract

Inelastic neutron scattering performed at a spallation source is used to make absolute measurements of the dynamic susceptibility of insulating La2CuO4 and superconducting La1.86Sr0.14CuO4 over the energy range 15 less than or equal to (h) over bar omega less than or equal to 350 meV. The effect of Sr doping on the magnetic excitations is to cause a large broadening in the wave vector and a substantial change in the spectrum of the local spin fluctuations. Comparison of the two compositions reveals a new energy scale (h) over bar Gamma = 22 +/- 5 meV in La1.86Sr0.14CuO4.

Original language	English
Journal	Physical Review Letters
Volume	76
Issue number	8
Pages (from-to)	1344-1347
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.76.1344
Publication status	Published - 1996

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title = "Comparison of the High-Frequency Magnetic Fluctuations in Insulating and Superconducting La2-xSrxCuO4",

abstract = "Inelastic neutron scattering performed at a spallation source is used to make absolute measurements of the dynamic susceptibility of insulating La2CuO4 and superconducting La1.86Sr0.14CuO4 over the energy range 15 less than or equal to (h) over bar omega less than or equal to 350 meV. The effect of Sr doping on the magnetic excitations is to cause a large broadening in the wave vector and a substantial change in the spectrum of the local spin fluctuations. Comparison of the two compositions reveals a new energy scale (h) over bar Gamma = 22 +/- 5 meV in La1.86Sr0.14CuO4. ",

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T1 - Comparison of the High-Frequency Magnetic Fluctuations in Insulating and Superconducting La2-xSrxCuO4

AU - Hayden, S.M.

AU - Aeppli, G.

AU - Mook, H.A.

AU - Perring, T.G.

AU - Mason, T.E.

AU - Cheong, S.W.

AU - Fisk, Z.

PY - 1996

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N2 - Inelastic neutron scattering performed at a spallation source is used to make absolute measurements of the dynamic susceptibility of insulating La2CuO4 and superconducting La1.86Sr0.14CuO4 over the energy range 15 less than or equal to (h) over bar omega less than or equal to 350 meV. The effect of Sr doping on the magnetic excitations is to cause a large broadening in the wave vector and a substantial change in the spectrum of the local spin fluctuations. Comparison of the two compositions reveals a new energy scale (h) over bar Gamma = 22 +/- 5 meV in La1.86Sr0.14CuO4.

AB - Inelastic neutron scattering performed at a spallation source is used to make absolute measurements of the dynamic susceptibility of insulating La2CuO4 and superconducting La1.86Sr0.14CuO4 over the energy range 15 less than or equal to (h) over bar omega less than or equal to 350 meV. The effect of Sr doping on the magnetic excitations is to cause a large broadening in the wave vector and a substantial change in the spectrum of the local spin fluctuations. Comparison of the two compositions reveals a new energy scale (h) over bar Gamma = 22 +/- 5 meV in La1.86Sr0.14CuO4.

KW - Materialer med særlige fysiske og kemiske egenskaber; Nye funktionelle materialer

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DO - 10.1103/PhysRevLett.76.1344

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EP - 1347

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8