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arXiv · 1105.3966

Temperature dependence of low-energy phonons in magnetic nonsuperconducting TbNi2B2C

S. Anissimova·A. Kreyssig·O. Stockert·M. Loewenhaupt·D. Reznik
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Abstract

We report temperature dependence of low-energy phonons in magnetic nonsuperconducting TbNi2B2C single crystals measured by inelastic neutron scattering. We observed a low-temperature softening and broadening of two phonon branches, qualitatively similar to that previously reported for superconducting RNi2B2C (R= rare earth, Y) compounds. This result suggests that the superconductivity in TbNi2B2C compounds is absent not because of a weak electron-phonon coupling but as a result of pairbreaking due to magnetism.

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S. Anissimova, A. Kreyssig, O. Stockert, M. Loewenhaupt, D. Reznik. 2011-05-19. Temperature dependence of low-energy phonons in magnetic nonsuperconducting TbNi2B2C. https://doi.org/10.1103/physrevb.84.104509

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