Strongly coupled charge-density wave transition in single-crystal Lu5Ir4Si10

Becker, B. ; Patil, N. G. ; Ramakrishnan, S. ; Menovsky, A. A. ; Nieuwenhuys, G. J. ; Mydosh, J. A. ; Kohgi, M. ; Iwasa, K. (1999) Strongly coupled charge-density wave transition in single-crystal Lu5Ir4Si10 Physical Review B: Condensed Matter and Materials Physics, 59 (11). pp. 7266-7269. ISSN 1098-0121

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We report the observation of a strongly coupled first-order charge-density wave (CDW) transition in a high-quality single crystal of the intermetallic compound Lu5Ir4Si10. The first-order nature is ascertained by a very narrow and huge cusp (360 J/mol K) in the specific heat. The susceptibility and the resistivity also show sharp jumps at the transition TCDW=83 K. The periodic lattice distortion associated with the CDW is exemplified by the formation of x-ray superlattice reflections along the tetragonal c→ axis with q→≈(0,0,3/7) (T<83 K). Although our results are in accordance with a quasi-one-dimensional CDW scenario, the first-order transition suggests a strong interchain coupling. We propose Lu5Ir4Si10 as a paradigm of such strong-coupling CDW systems.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:40855
Deposited On:25 May 2011 12:00
Last Modified:25 May 2011 12:00

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