Electron Dynamics of Silicon Surface States: Second-Harmonic HoleBurning on Si(111)7x7

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The ultrafast dynamics of electronic excitations of the surface dangling bond states of Si(111) 7 x 7 has been investigated by second harmonic generation as a probe of transient spectral hole burning. Spectral holes induced by a 100 fs pump at {approx_equal} 1.5 eV and their decay are interpreted in terms of electronic dephasing times as short as 15 fs. This fast time scale together with the strong excitation-induced dephasing observed is interpreted in terms of carrier-carrier scattering. In addition, strong coupling of the electronic excitation to surface optical phonons is observed and attributed to the localization at adatom sites ... continued below

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McGuire, John A.; Raschke, Markus B. & Shen, Yuen-Ron June 6, 2005.

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The ultrafast dynamics of electronic excitations of the surface dangling bond states of Si(111) 7 x 7 has been investigated by second harmonic generation as a probe of transient spectral hole burning. Spectral holes induced by a 100 fs pump at {approx_equal} 1.5 eV and their decay are interpreted in terms of electronic dephasing times as short as 15 fs. This fast time scale together with the strong excitation-induced dephasing observed is interpreted in terms of carrier-carrier scattering. In addition, strong coupling of the electronic excitation to surface optical phonons is observed and attributed to the localization at adatom sites of a surface electronic excitation and a surface phonon mode.

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  • Journal Name: Physical Review Letters; Journal Volume: 96; Related Information: Journal Publication Date: 02/28/2006

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  • Report No.: LBNL--57675
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 882077
  • Archival Resource Key: ark:/67531/metadc892436

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  • June 6, 2005

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  • Sept. 23, 2016, 2:42 p.m.

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  • Dec. 1, 2017, 9:51 p.m.

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McGuire, John A.; Raschke, Markus B. & Shen, Yuen-Ron. Electron Dynamics of Silicon Surface States: Second-Harmonic HoleBurning on Si(111)7x7, article, June 6, 2005; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc892436/: accessed July 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.