کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5363464 | 1503696 | 2013 | 4 صفحه PDF | دانلود رایگان |
We have performed synchrotron-radiation angle-resolved photoemission and angle-resolved two-photon photoemission (2PPE) study of Bi(1Â 1Â 1) films with the thickness of 12 bilayers grown on Si(1Â 1Â 1) - 7Â ÃÂ 7. From the detailed analysis of the excitation energy dependence of angle-resolved 2PPE spectra, we have determined the electronic structures in the occupied and unoccupied regions. The observed electronic structures in the unoccupied states above the Fermi-energy were attributed to the quantum-well states originate from the quantization of the 6p-derived bulk bands.
⺠In this study, we performed the angle-resolved two-photon photoemission of Bi(1 1 1) thin film with the thickness of 12 bilayers grown on Si (1 1 1) - 7 Ã 7. ⺠The electronic structures and energy dispersion in the unoccupied region above the Fermi-energy were determined. ⺠These observed unoccupied electronic states were attributed to the quantum-well states derived from the quantization of the 6p-derived bulk bands.
Journal: Applied Surface Science - Volume 267, 15 February 2013, Pages 66-69