Hildebrand, B;
Jaouen, T;
Didiot, C;
Razzoli, E;
Monney, G;
Mottas, ML;
Vanini, F;
... Aebi, P; + view all
(2017)
Local resilience of the 1T-TiSe2 charge density wave to Ti self-doping.
Physical Review B - Condensed Matter and Materials Physics
, 95
(8)
, Article 081104. 10.1103/PhysRevB.95.081104.
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Abstract
In Ti-intercalated self-doped 1T-TiSe2 crystals, the charge density wave (CDW) superstructure induces two nonequivalent sites for Ti dopants. Recently, it has been shown that increasing Ti doping dramatically influences the CDW by breaking it into phase-shifted domains. Here, we report scanning tunneling microscopy and spectroscopy experiments that reveal a dopant-site dependence of the CDW gap. Supported by density functional theory, we demonstrate that the loss of the long-range phase coherence introduces an imbalance in the intercalated-Ti site distribution and restrains the CDW gap closure. This local resilient behavior of the 1T-TiSe2 CDW reveals an entangled mechanism between CDW, periodic lattice distortion, and induced nonequivalent defects.
| Type: | Article |
|---|---|
| Title: | Local resilience of the 1T-TiSe2 charge density wave to Ti self-doping |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.95.081104 |
| Publisher version: | http://doi.org/10.1103/PhysRevB.95.081104 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1551558 |
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