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arXiv · 0908.2688

Evolution of the spin resonance in CeCoIn$_5$ under magnetic field

J. Panarin·S. Raymond·G. Lapertot·J. Flouquet
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Abstract

The evolution of the magnetic excitation spectrum of the unconventional superconductor CeCoIn$_{5}$ was studied by inelastic neutron scattering as a function of magnetic field applied in the [1, -1, 0] direction. The spin resonance characteristic of the superconducting states was observed up to about $H_{c2}$/2 : it is still centered at (1/2, 1/2, 1/2) when the magnetic field increases while its characteristic energy decreases and its lineshape substantially broadens.

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J. Panarin, S. Raymond, G. Lapertot, J. Flouquet. 2009-08-19. Evolution of the spin resonance in CeCoIn$_5$ under magnetic field. https://doi.org/10.1143/jpsj.78.113706

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