تقرير
Local measurement of the Eliashberg function of Pb islands: enhancement of electron-phonon coupling by quantum well states
| العنوان: | Local measurement of the Eliashberg function of Pb islands: enhancement of electron-phonon coupling by quantum well states |
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| المؤلفون: | Schackert, Michael, Märkl, Tobias, Jandke, Jasmin, Hölzer, Martin, Ostanin, Sergey, Gross, Eberhard K. U., Ernst, Arthur, Wulfhekel, Wulf |
| سنة النشر: | 2014 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Materials Science |
| الوصف: | Inelastic tunneling spectroscopy of Pb islands on Cu(111) obtained by scanning tunneling microscopy below 1K provides a direct access to the local Eliashberg function of the islands with high energy resolution. The Eliashberg function describes the electron-phonon interaction causing conventional superconductivity. The measured Eliashberg function strongly depends on the local thickness of the Pb nanostructures and shows a sharp maximum when quantum well states of the Pb islands come close to the Fermi energy. Ab initio calculations reveal that this is related to enhanced electron-phonon coupling at these thicknesses. Comment: 5 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.114.047002 |
| URL الوصول: | http://arxiv.org/abs/1402.0071 |
| رقم الأكسشن: | edsarx.1402.0071 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.114.047002 |
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