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arXiv · 1201.3046

Evidence of vectorial photoelectric effect on Copper

Emanuele Pedersoli·Francesco Banfi·Barbara Ressel·Stefania Pagliara·Claudio Giannetti·Gianluca Galimberti·Steve Lidia·John Corlett·Gabriele Ferrini·Fulvio Parmigiani
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Abstract

Quantum Efficiency (QE) measurements of single photon photoemission from a Cu(111) single crystal and a Cu polycrystal photocathodes, irradiated by 150 fs-6.28 eV laser pulses, are reported over a broad range of incidence angle, both in s and p polarizations. The maximum QE (\simeq 4\times10^{-4}) for polycrystalline Cu is obtained in p polarization at an angle of incidence θ = 65deg. We observe a QE enhancement in p polarization which can not be explained in terms of optical absorption, a phenomenon known as vectorial photoelectric effect. Issues concerning surface roughness and symmetry considerations are addressed. An explanation in terms of non local conductivity tensor is proposed.

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Emanuele Pedersoli, Francesco Banfi, Barbara Ressel, Stefania Pagliara, Claudio Giannetti, Gianluca Galimberti, Steve Lidia, John Corlett, Gabriele Ferrini, Fulvio Parmigiani. 2012-01-14. Evidence of vectorial photoelectric effect on Copper. https://doi.org/10.1063/1.2031949

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