Concerning the possibility of hidden one-dimensional Fermi surfaces for the K(0.25)WO(3) hexagonal bronze.
On the basis of first-principles density functional theory calculations, it is shown that, in contrast with a recent suggestion, K(0.25)WO(3) does not exhibit hidden one-dimensional Fermi surfaces. A charge-density-wave instability should not be at the origin of the resistivity anomaly of this bronze, which most likely results from potassium vacancy ordering.
Poloni
Roberta
R
Institut de Ciència de Materials de Barcelona (CSIC), Campus de la Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
Canadell
Enric
E
Pouget
Jean-Paul
JP