التفاصيل البيبلوغرافية
| العنوان: |
The surface electronic structure of Br/Pt(1 1 0) phases |
| المؤلفون: |
Zhang, Zhenrong1, Minca, Mariana1, Menzel, Alexander alexander.menzel@uibk.ac.at, Bertel, Erminald1 |
| المصدر: |
Surface Science. Sep2004 Part 1, Vol. 566-568, p476-481. 6p. |
| مصطلحات موضوعية: |
*ELECTRONIC structure, *FREE electron theory of metals, *ELECTRON emission, *PHOTOEMISSION |
| مستخلص: |
The surface electronic structure of c(2×2)-Br/Pt(1 1 0) and (3 × 1)-Br/Pt(1 1 0) is examined by angle-resolved UV photoemission. The (3 × 1) phase was previously shown to be associated with a charge density wave (CDW). In the present study we investigate, whether the CDW instability is caused by a saddle point mechanism or rather by Fermi surface nesting. Although we find saddle points in the (3 × 1) phase, it is not clear yet, whether they contribute significantly to the energetic stabilization of the CDW. So far, conventional Fermi surface nesting seems to be an equally likely explanation. Many-body effects are identified in the spectra. [Copyright &y& Elsevier] |
| قاعدة البيانات: |
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