Abstract
Symmetrized elastic moduli of high-quality single-crystalline CeRu2 have been measured between 2 and 300 K by means of an ultrasonic technique. Both transverse moduli (C11 -C12)/2 and C44 soften markedly from 300 to ∼20 K without structural transition. In contrast, the bulk modulus CB shows a normal temperature dependence without softening. These results indicate that there exists a marked structural fluctuation corresponding to a pure transverse strain in the normal conducting state of CeRu2. Our analysis, taking account of the deformation potential coupling, reveals that a narrow band with relatively high density of states at EF is responsible for the huge lattice softening.
Original language | English |
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Pages (from-to) | 2753-2756 |
Number of pages | 4 |
Journal | journal of the physical society of japan |
Volume | 65 |
Issue number | 9 |
DOIs | |
Publication status | Published - Jan 1 1996 |
Externally published | Yes |
Keywords
- Band structure
- CeRu
- Deformation potential coupling
- Elastic modulus
- Elastic softening
- Ultrasonic measurement
ASJC Scopus subject areas
- Physics and Astronomy(all)