Magnetic excitations and ordering in the heavy-electron superconductor URu2Si2

C. L. Broholm; J.K. Kjems; W.J.L. Buyers; P. Matthews; T.T.M. Palstra; A. A. Menovsky; J.A. Mydosh

doi:10.1103/PhysRevLett.58.1467

Magnetic excitations and ordering in the heavy-electron superconductor URu2Si2

C. L. Broholm, J.K. Kjems, W.J.L. Buyers, P. Matthews, T.T.M. Palstra, A. A. Menovsky, J.A. Mydosh

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Abstract

Neutron scattering demonstrates the coexistence of antiferromagnetic order and superconductivity below 1 K in the heavy-electron system URu2Si2. It is found that the upper (17.5 K) transition is to an antiferromagnetic phase with a (100) modulation wave vector and spins along the tetragonal c-axis. The ordered moment is unusually small, 0.03±0.01)
μB. However, spin waves develop from damped, finite-gap excitations above TN, and they are intense, propagating, and longitudinal with a zone centre gap of 1.8 meV.

Original language	English
Pages (from-to)	1467-1470
Number of pages	4
Journal	Physical review letters
Volume	58
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.58.1467
Publication status	Published - 6 Apr 1987
Externally published	Yes

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title = "Magnetic excitations and ordering in the heavy-electron superconductor URu2Si2",

abstract = "Neutron scattering demonstrates the coexistence of antiferromagnetic order and superconductivity below 1 K in the heavy-electron system URu2Si2. It is found that the upper (17.5 K) transition is to an antiferromagnetic phase with a (100) modulation wave vector and spins along the tetragonal c-axis. The ordered moment is unusually small, 0.03±0.01)μB. However, spin waves develop from damped, finite-gap excitations above TN, and they are intense, propagating, and longitudinal with a zone centre gap of 1.8 meV.",

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AU - Broholm, C. L.

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AU - Buyers, W.J.L.

AU - Matthews, P.

AU - Palstra, T.T.M.

AU - Menovsky, A. A.

AU - Mydosh, J.A.

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N2 - Neutron scattering demonstrates the coexistence of antiferromagnetic order and superconductivity below 1 K in the heavy-electron system URu2Si2. It is found that the upper (17.5 K) transition is to an antiferromagnetic phase with a (100) modulation wave vector and spins along the tetragonal c-axis. The ordered moment is unusually small, 0.03±0.01)μB. However, spin waves develop from damped, finite-gap excitations above TN, and they are intense, propagating, and longitudinal with a zone centre gap of 1.8 meV.

AB - Neutron scattering demonstrates the coexistence of antiferromagnetic order and superconductivity below 1 K in the heavy-electron system URu2Si2. It is found that the upper (17.5 K) transition is to an antiferromagnetic phase with a (100) modulation wave vector and spins along the tetragonal c-axis. The ordered moment is unusually small, 0.03±0.01)μB. However, spin waves develop from damped, finite-gap excitations above TN, and they are intense, propagating, and longitudinal with a zone centre gap of 1.8 meV.

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Magnetic excitations and ordering in the heavy-electron superconductor URu2Si2

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