Quantum Melting of the Charge-Density-Wave State in 1T-TiSe2

Authors

C. S. Snow, University of Illinois at Urbana-Champaign
J. F. Karpus, University of Illinois at Urbana-Champaign
S. L. Cooper, University of Illinois at Urbana-Champaign
T. E. Kidd, University of Illinois at Urbana-ChampaignFollow
T.-C. Chiang, University of Illinois at Urbana-ChampaignFollow

Document Type

Article

Journal/Book/Conference Title Title

Physical Review Letters

Volume

91

Issue

13

First Page

136402-1

Last Page

136402-4

Abstract

We report a Raman scattering study of low-temperature, pressure-induced melting of the charge-density- wave (CDW) phase of 1T-TiSe₂. Our measurements reveal that the collapse of the CDW state occurs in three stages: (i) For P<5 kbar, the pressure dependence of the CDW amplitude mode energies and intensities are indicative of a ‘‘crystalline’’ CDW regime; (ii) for 5<P<25 kbar, 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 > 25 kbar, the absence of amplitude modes reveals a metallic regime in which the CDW has melted.

Department

Department of Physics

Comments

First published in Physical Review Letters, v. 91, n. 13 (2003), published by the American Physical Society. DOI: 10.1103/PhysRevLett.91.136402

Original Publication Date

9-2003

DOI of published version

10.1103/PhysRevLett.91.136402

Repository

UNI ScholarWorks, University of Northern Iowa, Rod Library

Copyright

©2003 C.S. Snow, J.F. Karpus, S.L.Cooper, T.E. Kidd, and T.-C. Chiang. The copyright holder has granted permission for posting.

Date Digital

2003

Language

EN

File Format

application/pdf

Recommended Citation

Snow, C. S.; Karpus, J. F.; Cooper, S. L.; Kidd, T. E.; and Chiang, T.-C., "Quantum Melting of the Charge-Density-Wave State in 1T-TiSe2" (2003). Faculty Publications. 16.
https://scholarworks.uni.edu/phy_facpub/16