Pseudogap and charge density waves in two dimensions.
Using angle-resolved photoemission spectroscopy we demonstrate that a normal-state pseudogap exists above T(N-IC) in one of the most studied two-dimensional charge-density wave (CDW) dichalcogenides 2H-TaSe(2). 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.
Leibniz-Institute for Solid State Research, IFW-Dresden, Dresden, Germany.
S V
SV
Borisenko
A A
AA
Kordyuk
A N
AN
Yaresko
V B
VB
Zabolotnyy
D S
DS
Inosov
R
R
Schuster
B
B
Büchner
R
R
Weber
R
R
Follath
L
L
Patthey
H
H
Berger