Report
Evidence of reduced surface electron-phonon scattering in the conduction band of Bi_{2}Se_{3} by non-equilibrium ARPES
| العنوان: | Evidence of reduced surface electron-phonon scattering in the conduction band of Bi_{2}Se_{3} by non-equilibrium ARPES |
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| المؤلفون: | Crepaldi, A., Cilento, F., Ressel, B., Cacho, C., Johannsen, J. C., Zacchigna, M., Berger, H., Bugnon, Ph., Grazioli, C., Turcu, I. C. E., Springate, E., Kern, K., Grioni, M., Parmigiani, F. |
| المصدر: | Phys. Rev. B 88, 121404(R) (2013) |
| سنة النشر: | 2013 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | The nature of the Dirac quasiparticles in topological insulators calls for a direct investigation of the electron-phonon scattering at the \emph{surface}. By comparing time-resolved ARPES measurements of the TI Bi_{2}Se_{3} with different probing depths we show that the relaxation dynamics of the electronic temperature of the conduction band is much slower at the surface than in the bulk. This observation suggests that surface phonons are less effective in cooling the electron gas in the conduction band. Comment: 5 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.88.121404 |
| URL الوصول: | http://arxiv.org/abs/1310.4279 |
| رقم الانضمام: | edsarx.1310.4279 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.88.121404 |
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