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Temperature dependence of low-energy phonons in magnetic nonsuperconducting TbNi(2)B(2)C

TitleTemperature dependence of low-energy phonons in magnetic nonsuperconducting TbNi(2)B(2)C
Publication TypeJournal Article
Year of Publication2011
AuthorsAnissimova S, Kreyssig A, Stockert O, Loewenhaupt M, Reznik D
Journal TitlePhysical Review B
Volume84
Pages104509
Date Published09
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000294774300007
Keywordscrystal-structure, erni2b2c, HONI2B2C, order, rni(2)b(2)c, scattering, single-crystals, soft phonons, superconducting luni2b2c, weak ferromagnetism
Abstract

We report temperature dependence of low-energy phonons in magnetic nonsuperconducting TbNi(2)B(2)C single crystals measured by inelastic neutron scattering. We observed low-temperature softening and broadening of two phonon branches, qualitatively similar to that previously reported for superconducting RNi(2)B(2)C (R = rare earth, Y) compounds. This result suggests that superconductivity in TbNi(2)B(2)C compounds is absent not because of weak electron-phonon coupling but as a result of pair breaking due to magnetism.
DOI10.1103/PhysRevB.84.104509
Alternate JournalPhys. Rev. B