Abstract
TiSe2 undergoes charge density wave (CDW) order which can be suppressed under pressure. We use high-resolution electrical resistivity and magnetoresistance measurements to trace the CDW to the highest pressures of any transport study so far. Comparison with previous work shows that the CDW is very sensitive to pressure conditions resulting in a reduced critical pressure in the presence of non-hydrostaticity. Our analysis indicates that in perfect pressure conditions the intrinsic critical pressure might be as high as 5.6 GPa. At the same time, we observe signatures of enhanced scattering linked to the critical pressure, P CDW. The sensitivity of P CDW to non-hydrostaticity and the enhanced scattering linked to it raises questions of how the superconductivity induced in TiSe2 under pressure is related to the CDW order.
| Original language | English |
|---|---|
| Article number | 035001 |
| Journal | Electronic Structure |
| Volume | 4 |
| Issue number | 3 |
| Early online date | 30 Aug 2022 |
| DOIs | |
| Publication status | Published - 1 Sept 2022 |
Bibliographical note
Funding Information:The authors would like thank Roemer Hinlopen, Antony Carrington, Felix Flicker, and Jasper van Wezel for fruitful discussions. This work was partially supported by the EPSRC under Grants EP/R011141/1, EP/N026691/1, EP/L015544/1 as well as the ERC Horizon 2020 programme under Grant 715262-HPSuper.
Keywords
- charge-density-wave
- Fermi-surface reconstruction
- magnetoresistance
- quantum critical point
- TiSe
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry
- Electrochemistry