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Título: | Detecting the parity of electron wave functions in solids by quantum-well states of overlayers |
Autor: | Vyalikh, Denis V. CSIC ORCID; Kucherenko, Y.; Schiller, Frederik CSIC ORCID; Holder, M.; Kade, A.; Danzenbächer, Steffen; Molodtsov, S. L.; Laubschat, Clemens | Fecha de publicación: | 2008 | Editor: | IOP Publishing | Citación: | New Journal of Physics 10: 043038 (2008) | Resumen: | We present an approach to monitor the parity of wave functions of electronic states of bulk solids, which was elaborated on the model Ag/W(110) system. The dispersion of quantum-well (QW) states formed in the thin Ag layer was examined by means of angle-resolved photoemission. The obtained experimental data were compared with results of layer Korringa–Kohn–Rostoker calculations. We found that around k points, where the two-dimensional QW bands cross the projected bulk bands of the W substrate of the same symmetry, broad hybridization gaps in the QW distributions are observed. Careful analysis based on a symmetry approach for the electronic bands in the Ag monolayer and the W substrate suggests that respective gaps may generally be taken as a fingerprint for the interaction with substrate states of even parity with respect to the emission plane. We anticipate that QW states may be used as a probe for symmetry properties of strongly correlated states in systems like heavy-fermion compounds that are difficult to access theoretically within an ab initio approach. | Versión del editor: | https://doi.org/10.1088/1367-2630/10/4/043038 | URI: | http://hdl.handle.net/10261/224330 | DOI: | 10.1088/1367-2630/10/4/043038 | E-ISSN: | 1367-2630 |
Aparece en las colecciones: | (CFM) Artículos |
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