Role of the Lattice in the γ → α Phase Transition of Ce: A High-Pressure Neutron and X-Ray Diffraction Study

I. K. Jeong, T. W. Darling, M. J. Graf, Th Proffen, R. H. Heffner, Yongjae Lee, T. Vogt, J. D. Jorgensen

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Abstract

The lattice parameters and thermal displacements in the γ → α phase transition of Ce was investigated for. Using the framework of electron-phonon coupling, it was observed that the bulk modulus follows a power-law pressure dependence. The energy for the phase transition was provided by the kinetic energy of the itinerant f electron. the results show that in addition to electronic and spin instabilities, lattice dynamics and electron-phonon coupling are essential elements for the study of the γ → α phase transition in elemental Ce.

Original languageEnglish
Article number105702
JournalPhysical Review Letters
Volume92
Issue number10
DOIs
Publication statusPublished - 2004 Mar 12

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Jeong, I. K., Darling, T. W., Graf, M. J., Proffen, T., Heffner, R. H., Lee, Y., Vogt, T., & Jorgensen, J. D. (2004). Role of the Lattice in the γ → α Phase Transition of Ce: A High-Pressure Neutron and X-Ray Diffraction Study. Physical Review Letters, 92(10), [105702]. https://doi.org/10.1103/PhysRevLett.92.105702