Spin fluctuations and superconductivity in Ba2YCu3O6

K. B. Lyons; P. A. Fleury; L. F. Schneemeyer; J. V. Waszczak

doi:10.1103/PhysRevLett.60.732

Spin fluctuations and superconductivity in Ba2YCu3O6

K. B. Lyons, P. A. Fleury, L. F. Schneemeyer, J. V. Waszczak

Chemistry and Biochemistry

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Abstract

We report observation of spin-pair excitations in Ba2YCu3O6, with in the range 0.0-0.9. The frequency of the excitations, and hence the value of the exchange constant, J=950 cm-1, is similar to that reported recently for (nonsuperconducting) La2CuO4. The present observation of magnetic excitations in a superconducting material, and of their evolution as a function of, demonstrate a large influence of carrier concentration on the spin-fluctuation dynamics.

Original language	English
Pages (from-to)	732-735
Number of pages	4
Journal	Physical Review Letters
Volume	60
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.60.732
State	Published - 1988

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10.1103/PhysRevLett.60.732

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abstract = "We report observation of spin-pair excitations in Ba2YCu3O6, with in the range 0.0-0.9. The frequency of the excitations, and hence the value of the exchange constant, J=950 cm-1, is similar to that reported recently for (nonsuperconducting) La2CuO4. The present observation of magnetic excitations in a superconducting material, and of their evolution as a function of, demonstrate a large influence of carrier concentration on the spin-fluctuation dynamics.",

author = "Lyons, {K. B.} and Fleury, {P. A.} and Schneemeyer, {L. F.} and Waszczak, {J. V.}",

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AU - Fleury, P. A.

AU - Schneemeyer, L. F.

AU - Waszczak, J. V.

PY - 1988

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N2 - We report observation of spin-pair excitations in Ba2YCu3O6, with in the range 0.0-0.9. The frequency of the excitations, and hence the value of the exchange constant, J=950 cm-1, is similar to that reported recently for (nonsuperconducting) La2CuO4. The present observation of magnetic excitations in a superconducting material, and of their evolution as a function of, demonstrate a large influence of carrier concentration on the spin-fluctuation dynamics.

AB - We report observation of spin-pair excitations in Ba2YCu3O6, with in the range 0.0-0.9. The frequency of the excitations, and hence the value of the exchange constant, J=950 cm-1, is similar to that reported recently for (nonsuperconducting) La2CuO4. The present observation of magnetic excitations in a superconducting material, and of their evolution as a function of, demonstrate a large influence of carrier concentration on the spin-fluctuation dynamics.

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Spin fluctuations and superconductivity in Ba2YCu3O6

Abstract

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