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University of Illinois at Urbana-Champaign
Structural Transitions in Titanium-Diselenide
Abstract
dc:descriptionThe superlattice formation in TiSe(,2) appears to be due to an interaction between electrons and holes via a soft zone-boundry phonon. When the holes are filled by electrons from excess Ti, or removed by uncrossing the bands with zirconium doping, the superlattice transition is suppressed. When the electrons are removed by doping with vanadium, the transition is also suppressed. In all cases, the point at which the superlattice disappears coincides with the complete removal of one of the carriers. TiS(,2) has only electrons and does not transform, but it does have a diffuse streaking which is suggestive of a tendency toward the instability.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Physics
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2015
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Gaby, John Hand
Subjects
dc:subject × 1Rights
- Language dc:language
- eng
Identifiers
dc:identifier.*- Identifier
- (UMI)AAI8108509
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/77194