Angle-resolved high-resolution photoemission spectra of the α phase of Pb/Ge(111)-(√3×√3)R30° have been measured below (100 K) and above (300 and 500 K) the transition to a charge-density-wave insulator state. The spectra strongly differ from those expected from the published local density approximation calculations showing a surface band without dispersion and correlation and fluctuation effects also at high temperature. A pseudogap is observed at 100 K.
Temperature and momentum dependence of the spectral function of the charge-density wave and of the normal α phase of Pb/Ge(111)
MODESTI, SILVIO
1997-01-01
Abstract
Angle-resolved high-resolution photoemission spectra of the α phase of Pb/Ge(111)-(√3×√3)R30° have been measured below (100 K) and above (300 and 500 K) the transition to a charge-density-wave insulator state. The spectra strongly differ from those expected from the published local density approximation calculations showing a surface band without dispersion and correlation and fluctuation effects also at high temperature. A pseudogap is observed at 100 K.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.