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Title: Anomalous Phonon Scattering Below {ital T}{sub {ital c}} in YNi{sub 2} {sup 11}B{sub 2}C

Abstract

Inelastic neutron scattering measurements were performed on large volume ({approximately}2cm{sup 3}) single crystals of {sup 11}B substituted intermetallic superconductor YNi{sub 2}{sup 11}B{sub 2}C. With decreasing temperature from room temperature to {ital T}{approximately}30 K, a gradual softening of a phonon spectrum is observed at around {ital Q}=(0.525,0,8), similar to the case of LuNi{sub 2}B{sub 2}C reported by Dervenagas {ital et} {ital al}.[Phys.Rev.B{bold 52}, R9839 (1995)]. In addition, we discovered that an intense new peak appears below {ital T}{sub {ital c}}=14.2 K. The peak intensity of the new peak shows a clear onset at {ital T}{sub {ital c}} and an order-parameter-like temperature dependence of superconductivity. With application of magnetic field, however, the new peak is easily suppressed and disappears by {ital H}={ital H}{sub {ital c}2} ({approximately}4.7 T at {ital T}=5.5 K). These results strongly indicate that this new peak is undoubtedly associated with its superconducting state. {copyright} {ital 1996 The American Physical Society.}

Authors:
; ; ;  [1]
  1. The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-01 (Japan)
Publication Date:
OSTI Identifier:
399867
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 77; Journal Issue: 22; Other Information: PBD: Nov 1996
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; YTTRIUM COMPOUNDS; SUPERCONDUCTIVITY; NICKEL COMPOUNDS; CARBIDES; BORIDES; YTTRIUM CARBIDES; NICKEL BORIDES; NEUTRON DIFFRACTION; INELASTIC SCATTERING; PHONONS; MONOCRYSTALS; TEMPERATURE DEPENDENCE; MAGNETIC FIELDS

Citation Formats

Kawano, H, Yoshizawa, H, Takeya, H, Kadowaki, K, Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo, Tokai, Ibaraki 319-11, National Research Institute for Metals, Sengen 1-2-1, Tsukuba, Ibaraki 305, and Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305. Anomalous Phonon Scattering Below {ital T}{sub {ital c}} in YNi{sub 2} {sup 11}B{sub 2}C. United States: N. p., 1996. Web. doi:10.1103/PhysRevLett.77.4628.
Kawano, H, Yoshizawa, H, Takeya, H, Kadowaki, K, Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo, Tokai, Ibaraki 319-11, National Research Institute for Metals, Sengen 1-2-1, Tsukuba, Ibaraki 305, & Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305. Anomalous Phonon Scattering Below {ital T}{sub {ital c}} in YNi{sub 2} {sup 11}B{sub 2}C. United States. https://doi.org/10.1103/PhysRevLett.77.4628
Kawano, H, Yoshizawa, H, Takeya, H, Kadowaki, K, Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo, Tokai, Ibaraki 319-11, National Research Institute for Metals, Sengen 1-2-1, Tsukuba, Ibaraki 305, and Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305. 1996. "Anomalous Phonon Scattering Below {ital T}{sub {ital c}} in YNi{sub 2} {sup 11}B{sub 2}C". United States. https://doi.org/10.1103/PhysRevLett.77.4628.
@article{osti_399867,
title = {Anomalous Phonon Scattering Below {ital T}{sub {ital c}} in YNi{sub 2} {sup 11}B{sub 2}C},
author = {Kawano, H and Yoshizawa, H and Takeya, H and Kadowaki, K and Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo, Tokai, Ibaraki 319-11 and National Research Institute for Metals, Sengen 1-2-1, Tsukuba, Ibaraki 305 and Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305},
abstractNote = {Inelastic neutron scattering measurements were performed on large volume ({approximately}2cm{sup 3}) single crystals of {sup 11}B substituted intermetallic superconductor YNi{sub 2}{sup 11}B{sub 2}C. With decreasing temperature from room temperature to {ital T}{approximately}30 K, a gradual softening of a phonon spectrum is observed at around {ital Q}=(0.525,0,8), similar to the case of LuNi{sub 2}B{sub 2}C reported by Dervenagas {ital et} {ital al}.[Phys.Rev.B{bold 52}, R9839 (1995)]. In addition, we discovered that an intense new peak appears below {ital T}{sub {ital c}}=14.2 K. The peak intensity of the new peak shows a clear onset at {ital T}{sub {ital c}} and an order-parameter-like temperature dependence of superconductivity. With application of magnetic field, however, the new peak is easily suppressed and disappears by {ital H}={ital H}{sub {ital c}2} ({approximately}4.7 T at {ital T}=5.5 K). These results strongly indicate that this new peak is undoubtedly associated with its superconducting state. {copyright} {ital 1996 The American Physical Society.}},
doi = {10.1103/PhysRevLett.77.4628},
url = {https://www.osti.gov/biblio/399867}, journal = {Physical Review Letters},
number = 22,
volume = 77,
place = {United States},
year = {Fri Nov 01 00:00:00 EST 1996},
month = {Fri Nov 01 00:00:00 EST 1996}
}