Hildebrand, B;
Jaouen, T;
Mottas, M-L;
Monney, G;
Barreteau, C;
Giannini, E;
Bowler, DR;
(2018)
Local Real-Space View of the Achiral 1T-TiSe2 2 x 2 x 2 Charge Density Wave.
Physical Review Letters
, 120
(13)
10.1103/PhysRevLett.120.136404.
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Abstract
The transition metal dichalcogenide 1T-TiSe2-two-dimensional layered material undergoing a commensurate 2 × 2 × 2 charge density wave (CDW) transition with a weak periodic lattice distortion (PLD) below ≈200 K. Scanning tunneling microscopy (STM) combined with intentionally introduced interstitial Ti atoms allows us to go beyond the usual spatial resolution of STM and to intimately probe the threedimensional character of the PLD. Furthermore, the inversion-symmetric achiral nature of the CDW in the z direction is revealed, contradicting the claimed existence of helical CDW stacking and associated chiral order. This study paves the way to a simultaneous real-space probing of both charge and structural reconstructions in CDW compounds.
| Type: | Article |
|---|---|
| Title: | Local Real-Space View of the Achiral 1T-TiSe2 2 x 2 x 2 Charge Density Wave |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.120.136404 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.120.136404 |
| 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 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-pp.ucl.ac.uk/id/eprint/10047238 |
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