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Phys. Rev. B 70, 220504(R) (2004) [4 pages]

Elastic anomalies in HoNi2B2C single crystals

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V. D. Fil1, A. Knigavko2,*, A. N. Zholobenko1, E.-M. Choi3, and S.-I. Lee3
1B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Prospekt Lenina 47, Kharkov 61103, Ukraine
2Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1
3National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea

See Also: Publisher's Note

Received 27 August 2004; published 15 December 2004; publisher error corrected 16 December 2004

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 of 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.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.70.220504
DOI:
10.1103/PhysRevB.70.220504
PACS:
62.20.Dc, 71.70.Ej, 64.70.Kb

*Electronic address: aknigav@physics.mcmaster.ca

See Also

Publisher's Note: V. D. Fil, A. Knigavko, A. N. Zholobenko, E.-M. Choi, and S.-I. Lee, Publisher's Note: Elastic anomalies in HoNi2B2C single crystals [Phys. Rev. B 70, 220504(R) (2004)], Phys. Rev. B 70, 229902 (2004).

 
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