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Article
Quantum Melting of the Charge-Density-Wave State in 1T−TiSe2
Physical Review Letters (2003)
  • C.S. Snow
  • J.F. Karpus
  • S.L. Cooper
  • Timothy E. Kidd, University of Northern Iowa
  • T.C. Chaing
Abstract
We report a Raman scattering study of low-temperature, pressure-induced melting of the charge-density-wave (CDW) phase of 1TTiSe2. Our measurements reveal that the collapse of the CDW state occurs in three stages: (i) For P<5kbar, the pressure dependence of the CDW amplitude mode energies and intensities are indicative of a “crystalline” CDW regime; (ii) for 5<P<25kbar, there is a decrease in the CDW amplitude mode energies and intensities with increasing pressure that suggests a regime in which the CDW softens, and exhibits enhanced fluctuations; and (iii) for P>25kbar, the absence of amplitude modes reveals a metallic regime in which the CDW has melted.
Disciplines
Publication Date
April 8, 2003
DOI
http://dx.doi.org/10.1103/PhysRevLett.91.136402
Citation Information
C.S. Snow, J.F. Karpus, S.L. Cooper, Timothy E. Kidd, et al.. "Quantum Melting of the Charge-Density-Wave State in 1T−TiSe2" Physical Review Letters Vol. 91 Iss. 13 (2003)
Available at: http://works.bepress.com/tim-kidd/30/