Loading...
research article
Dynamical properties of the one-dimensional band insulator (NbSe4)(3)I
Optical and photoemission experiments reveal unexpected spectral signatures of one-dimensional band insulators. In the model compound (NbSe4)(3)I the optical conductivity decays as a power law sigma(1)(omega) similar to omega(-4.25) above a sharp gap edge. Photoemission observes both the valence and a shadow band, produced w by a commensurate superstructure. We identify an optical and photoemission band gap consistent with other measurements but much smaller than the energy scale defined by the dispersion of the band peak in the photoemission spectra.
Type
research article
Authors
Zwick, F.
•
Voit, J.
•
•
Zacchigna, M.
•
Degiorgi, L.
•
•
Gruner, G.
•
Vescoli, V.
Publication date
2000
Publisher
Published in
Volume
84
Start page
1272
End page
1275
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
April 7, 2010
Use this identifier to reference this record