Open AccessAnomalous Phonon Scattering BelowT c Y Ni 2
Author(s) -
H. Kawano,
H. Yoshizawa,
Hiroyuki Takeya,
Kazuo Kadowaki
Publication year - 1996
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.77.4628
Subject(s) - physics , condensed matter physics , intermetallic , superconductivity , crystallography , materials science , chemistry , alloy , composite material
Inelastic neutron scattering measurements were performed on large volume (∼2 cm3) single crystals of 11B substituted intermetallic superconductor YNi211B2C. With decreasing temperature, a gradual softening of a phonon spectrum is observed at around Q = (0.525,0,8), similar to the case of LuNi2B2C reported by Dervenagas et al. [Phys. Rev. B 52, R9839 (1995)]. In addition, we discovered that an intense new peak appears below Tc = 14.2 K. With application of magnetic field, however, it is easily suppressed and disappears by H = Hc2 ( ∼4.7 T at T = 5.5 K). These results strongly indicate that this new peak is undoubtedly associated with its superconducting state
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