Pseudogap and Charge Density Waves in Two Dimensions
Abstract
Using angle-resolved photoemission spectroscopy we demonstrate that a normal-state pseudogap exists above TN-IC in one of the most studied two-dimensional charge-density wave (CDW) dichalcogenides 2H-TaSe2. The initial formation of the incommensurate CDW is confirmed as being driven by a conventional nesting instability, which is marked by a pseudogap. The magnitude, character, and anisotropy of the 2D-CDW pseudogap bear considerable resemblance to those seen in superconducting cuprates.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 2008
- DOI:
- 10.1103/PhysRevLett.100.196402
- arXiv:
- arXiv:0704.1544
- Bibcode:
- 2008PhRvL.100s6402B
- Keywords:
-
- 71.45.Lr;
- 79.60.-i;
- Charge-density-wave systems;
- Photoemission and photoelectron spectra;
- Condensed Matter - Superconductivity;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 14 pages including figures and supplementary information