English

Elastic anomalies in HoNi2B2C single crystals

Superconductivity 2009-11-10 v2
Authors: V. D. Fil , A. Knigavko , A. N. Zholobenko , E. -M. Choi , S. -I. Lee
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Abstract

We have measured temperature and magnetic field dependencies of the sound velocities and the sound attenuation in HoNi2B2C single crystals. The main result is a huge softening the velocity of C66 mode due to a cooperative Jahn-Teller effect, resulting in a tetragonal-orthorhombic structural phase transition. Anomalies in the behavior of the C66 mode through various magnetic phase transitions permit us to revise the low temperature H-T phase diagrams of this compound.

Keywords

phase transitions crystal growth and phase transitions

Cite

@article{arxiv.cond-mat/0406007,
  title  = {Elastic anomalies in HoNi2B2C single crystals},
  author = {V. D. Fil and A. Knigavko and A. N. Zholobenko and E. -M. Choi and S. -I. Lee},
  journal= {arXiv preprint arXiv:cond-mat/0406007},
  year   = {2009}
}

Comments

v2: a discussion of the C44 mode with the comparison to Y borocarbide was added

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