Surface and bulk contribution to Cu(111) quantum efficiency

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The quantum efficiency (QE) of Cu(111) is measured for different impinging light angles with photon energies just above the work function. We observe that the vectorial photoelectric effect, an enhancement of the QE due to illumination with light with an electric vector perpendicular to the sample surface, is stronger in the more surface sensitive regime. This can be explained by a contribution to photoemission due to the variation in the electromagnetic potential at the surface. The contributions of bulk and surface electrons can then be determined.

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Pedersoli, Emanuele; Greaves, Corin Michael Ricardo; Wan, Weishi; Coleman-Smith, Christopher; Padmore, Howard A.; Pagliara, Stefania et al. November 4, 2008.

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The quantum efficiency (QE) of Cu(111) is measured for different impinging light angles with photon energies just above the work function. We observe that the vectorial photoelectric effect, an enhancement of the QE due to illumination with light with an electric vector perpendicular to the sample surface, is stronger in the more surface sensitive regime. This can be explained by a contribution to photoemission due to the variation in the electromagnetic potential at the surface. The contributions of bulk and surface electrons can then be determined.

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3

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  • Journal Name: APPLIED PHYSICS LETTERS; Journal Volume: 93; Journal Issue: 18; Related Information: Journal Publication Date: 3 November 2008

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  • Report No.: LBNL-1245E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 944127
  • Archival Resource Key: ark:/67531/metadc898505

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  • November 4, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Jan. 4, 2017, 3:55 p.m.

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Pedersoli, Emanuele; Greaves, Corin Michael Ricardo; Wan, Weishi; Coleman-Smith, Christopher; Padmore, Howard A.; Pagliara, Stefania et al. Surface and bulk contribution to Cu(111) quantum efficiency, article, November 4, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc898505/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.