Title of article
Electronic structures in unoccupied states of Bi thin film studied with two-photon photoemission spectroscopy
Author/Authors
Masaki Imamura، نويسنده , , Shuji Fujimasa، نويسنده , , Kazutoshi Takahashi، نويسنده , , Isamu Yamamoto، نويسنده , , Junpei Azuma and Masao Kamada، نويسنده , , Masao Kamada، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
4
From page
66
To page
69
Abstract
We have performed synchrotron-radiation angle-resolved photoemission and angle-resolved two-photon photoemission (2PPE) study of Bi(1 1 1) films with the thickness of 12 bilayers grown on Si(1 1 1) – 7 × 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.
Keywords
Bismuth , Quantum well states , Two-photon photoemission spectroscopy , Electronic structure
Journal title
Applied Surface Science
Serial Year
2013
Journal title
Applied Surface Science
Record number
1006548
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