Photoemission and STM, STS study of Cs/p-GaAs(110)

Details Photoemission and STM, STS study of Cs/p-GaAs(110) Photoemission and STM, STS study of Cs/p-GaAs(110)

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..570..908y&link_type=abstract

The fourteenth international spin physics symposium, SPIN2000. AIP Conference Proceedings, Volume 570, pp. 908-911 (2001).

Physics

Electron Sources, Polarized Beams, Photomultipliers, Phototubes And Photocathodes

Scientific paper

Various stage of adsorbed Cs, i.e., one-dimensional (1D) lines, polygons and coherently c(4×4)-ordered polygons, on cleaved p-GaAs(110) are studied by scanning tunneling microscopy (STM) and scanning tunneling spectroscopies (STS) with an interest in relation to the photo-electron emission. It is understood that only the coherently c(4×4)-ordered Cs polygon surface (Cs coverage of 0.6 ML and 0.7 ML) can emit photo-electrons due to a sufficient reduction of the local work function down to 1.3 eV to get a negative electron affinity state. .

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