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Charge Density Waves in Exfoliated Thin Films of Van der Waals Materials
- Source :
- Nano Letters, 12 (11), 5941 - 5945 (2012)
- Publication Year :
- 2012
-
Abstract
- A number of the charge-density-wave materials reveal a transition to the macroscopic quantum state around 200 K. We used graphene-like mechanical exfoliation of titanium diselenide crystals to prepare a set of films with different thicknesses. The transition temperature to the charge-density-wave state was determined via modification of Raman spectra of titanium diselenide films. It was established that the transition temperature can increase from its bulk value to ~240 K as the thickness of the van-der-Waals films reduces to the nanometer range. The obtained results are important for the proposed applications of such materials in the collective-state information processing, which require room-temperature operation.<br />Comment: 13 pages
Details
- Database :
- arXiv
- Journal :
- Nano Letters, 12 (11), 5941 - 5945 (2012)
- Publication Type :
- Report
- Accession number :
- edsarx.1211.4486
- Document Type :
- Working Paper