Evidence for Three Fluctuation Channels in the Spin Resonance of the Unconventional Superconductor CeCoIn5

S. Raymond; K. Kaneko; Arno Hiess; P. Steffens; G. Lapertot

doi:10.1103/PhysRevLett.109.237210

Evidence for Three Fluctuation Channels in the Spin Resonance of the Unconventional Superconductor CeCoIn5

S. Raymond, K. Kaneko, Arno Hiess, P. Steffens, G. Lapertot

Research output: Contribution to journal › Article › peer-review

Abstract

Polarized inelastic neutron scattering under a magnetic field is used to get a microscopic insight into the spin resonance of the heavy fermion superconductor CeCoIn5. The resonance line shape is found to depend on the neutron polarization: Some of the spectral weight is common to the two polarization channels while the remaining part is distributed equally between them. This is evidence for the spin resonance being a degenerate mode with three fluctuation channels: A Zeeman split contribution and an additional longitudinal mode.

Original language	English
Article number	237210
Journal	Physical Review Letters
Volume	109
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.109.237210
Publication status	Published - 2012

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Natural Sciences
Physical Sciences

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10.1103/PhysRevLett.109.237210

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title = "Evidence for Three Fluctuation Channels in the Spin Resonance of the Unconventional Superconductor CeCoIn5",

abstract = "Polarized inelastic neutron scattering under a magnetic field is used to get a microscopic insight into the spin resonance of the heavy fermion superconductor CeCoIn5. The resonance line shape is found to depend on the neutron polarization: Some of the spectral weight is common to the two polarization channels while the remaining part is distributed equally between them. This is evidence for the spin resonance being a degenerate mode with three fluctuation channels: A Zeeman split contribution and an additional longitudinal mode.",

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AU - Steffens, P.

AU - Lapertot, G.

PY - 2012

Y1 - 2012

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AB - Polarized inelastic neutron scattering under a magnetic field is used to get a microscopic insight into the spin resonance of the heavy fermion superconductor CeCoIn5. The resonance line shape is found to depend on the neutron polarization: Some of the spectral weight is common to the two polarization channels while the remaining part is distributed equally between them. This is evidence for the spin resonance being a degenerate mode with three fluctuation channels: A Zeeman split contribution and an additional longitudinal mode.

U2 - 10.1103/PhysRevLett.109.237210

DO - 10.1103/PhysRevLett.109.237210

M3 - Article

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SN - 1079-7114

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

M1 - 237210

ER -

Evidence for Three Fluctuation Channels in the Spin Resonance of the Unconventional Superconductor CeCoIn5

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