Abstract
We conduct Angle Resolved Photoemission Spectroscopy (ARPES) investigation on 2H-TaS2, a prototypical incommensurate Charge Density Wave (CDW) material. A comparative study of the low-energy electronic structures of 2H-TaS2 and two other related compounds, 2H-TaSe2 and 2H-NbSe2, identifies several generic features of their CDW orders. Firstly, Fermi surface (FS) nesting alone doesn't seem to give rise to the CDW instability in these compounds. Secondly, partial gapping of the underlying FS surface in the CDW state is common to each of these materials. Finally, the CDW energy gap, unlike the energy gap in a superconductor, is not symmetric with respect to the chemical potential.
Original language | English |
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Title of host publication | Spintronics X |
Publisher | SPIE |
Volume | 10357 |
ISBN (Electronic) | 9781510611719 |
DOIs | |
Publication status | Published - Jan 1 2017 |
Event | Spintronics X Symposium - San Diego, United States Duration: Aug 6 2017 → Aug 10 2017 |
Other
Other | Spintronics X Symposium |
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Country | United States |
City | San Diego |
Period | 8/6/17 → 8/10/17 |
Keywords
- Angle Resolved Photoemission Spectroscopy
- Bogoliubov dispersion
- Charge density wave
- Energy gap
- Fermi surface
- Particle-hole symmetry.
- Superconductor
- Transition metal dichalcogenide
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering