Novello, AM;
Hildebrand, B;
Scarfato, A;
Didiot, C;
Monney, G;
Ubaldini, A;
Berger, H;
... Renner, C; + view all
(2015)
Scanning tunneling microscopy of the charge density wave in 1T-TiSe2 in the presence of single atom defects.
Physical Review B
, 92
(8)
, Article 081101(R). 10.1103/PhysRevB.92.081101.
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Novello et al. - 2015 - Scanning tunneling microscopy of the charge density wave in TiSe2 in the presence of single atom defects.pdf - Published Version Download (817kB) | Preview |
Abstract
We present a detailed low-temperature scanning tunneling microscopy (STM) study of the commensurate charge density wave (CDW) in 1T -TiSe2 in the presence of single atom defects.We find no significant modification of the CDW lattice in single crystals with native defect concentrations where some bulk probes already measure substantial reductions in the CDW phase transition signature. A systematic analysis of STM micrographs combined with density functional theory modeling of atomic defect patterns indicate that the observed CDW modulation lies in the Se surface layer. The defect patterns clearly show there are no 2H-polytype inclusions in the CDW phase, as previously found at room temperature [A. N. Titov et al., Phys. Solid State 53, 1073 (2011)]. They further provide an alternative explanation for the chiral Friedel oscillations recently reported in this compound [J. Ishioka et al., Phys. Rev. B 84, 245125 (2011)].
| Type: | Article |
|---|---|
| Title: | Scanning tunneling microscopy of the charge density wave in 1T-TiSe2 in the presence of single atom defects |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.92.081101 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevB.92.081101 |
| Language: | English |
| Additional information: | ©2015 American Physical Society |
| UCL classification: | UCL 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/1474700 |
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