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Article Dans Une Revue Physical Review Letters Année : 2010

Phonon Contribution to the Lifetime of Surface State Quasiparticles Confined in Nanopyramids

Cédric Tournier-Colletta
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Bertrand Kierren
Yannick Fagot-Revurat
Daniel Malterre
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Résumé

We present a scanning tunneling microscopy investigation of the dynamics of hot electrons and holes in Ag pyramidal nanostructures. The geometry of the nanostructure leads to a strong reduction of the decay mechanism into the bulk states and then to a large reflection coefficient of the surface electronic waves. Therefore, in contrast to quantum corrals and adatom islands which show a dominant lossy scattering contribution to the linewidth, the narrow observed structures in the differential conductivity spectra reveal the expected linewidth minimum at the Fermi energy. The electron-phonon contribution to the lifetime is shown to be dominant, in agreement with previous photoemission measurements.
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Dates et versions

hal-04619135 , version 1 (20-06-2024)

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Cédric Tournier-Colletta, Bertrand Kierren, Yannick Fagot-Revurat, Daniel Malterre. Phonon Contribution to the Lifetime of Surface State Quasiparticles Confined in Nanopyramids. Physical Review Letters, 2010, 104 (1), pp.016802. ⟨10.1103/physrevlett.104.016802⟩. ⟨hal-04619135⟩
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