Quantum-well or bulklike behaviour of Cu layers on Co
E D Hansen; T Miller; T-C Chiang; E D Hansen; Department of Physics, University of Illinois, 1110 West Green Street, Urbana, IL 61801-3080, USA and Frederick Seitz Materials Research Laboratory, University of Illinois, 104 South Goodwin Avenue, Urbana, IL 61801-2902, USA; T Miller; Department of Physics, University of Illinois, 1110 West Green Street, Urbana, IL 61801-3080, USA and Frederick Seitz Materials Research Laboratory, University of Illinois, 104 South Goodwin Avenue, Urbana, IL 61801-2902, USA; T-C Chiang; Department of Physics, University of Illinois, 1110 West Green Street, Urbana, IL 61801-3080, USA and Frederick Seitz Materials Research Laboratory, University of Illinois, 104 South Goodwin Avenue, Urbana, IL 61801-2902, USA
Журнал:
Journal of Physics: Condensed Matter
Дата:
1997-08-11
Аннотация:
Angle-resolved photoemission was employed to probe the quantum-well behaviour, or the lack of it, of Cu films epitaxially grown on low-index Co substrates. Upon varying the photon energy, films grown on Co(111) exhibited a bulklike continuous dispersion for the sp state, while films grown on Co(100) and Co(110) exhibited nondispersive quantum-well peaks with intensities modulated by the bulk band dispersion. These different behaviours, namely, bulklike versus quantum-well-like, are explained in terms of the band structure. The results are correlated with the magnetic coupling effects in multilayer systems.
188.6Кб