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

Tournier-Colletta, C.; Kierren, B.; Fagot‐Revurat, Y.; Malterre, D.

doi:10.1103/physrevlett.104.016802

Cited by 20 publications

(48 citation statements)

References 21 publications

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“…We reported previously [22] that after the evaporation of 3 parts NC-Ph 6 -CN and 2 parts demonstrates a standing electron wave pattern indicating confinement [2,3,8,19,27] of the electrons of the surface state described by the energy dispersion…”

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confidence: 87%

Tunable Quantum Dot Arrays Formed from Self-Assembled Metal-Organic Networks

et al. 2011

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The confinement of Ag(111) surface state electrons by self-assembled, nanoporous metal-organic networks is studied using low-temperature scanning tunneling microscopy/spectroscopy and electronic structure calculations. The honeycomb networks of Co ligands and dicarbonitrile-oligophenyl linkers induce surface resonance states confined in the cavities with a tunable energy level alignment. We find that electron scattering on the molecules is repulsive and stronger than on the weakly attractive Co and that the networks represent periodic arrays of coupled quantum dots featuring uniform electronic levels.

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confidence: 87%

Tunable Quantum Dot Arrays Formed from Self-Assembled Metal-Organic Networks

et al. 2011

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“…1 Nowadays, structures allowing confinement in three dimensions (3D) (quantum corrals, [2][3][4] adatom and vacancy islands, [5][6][7][8][9] and self-organized molecular structures 10 ) and two dimensions (2D) (atomic chains, [11][12][13] and ad-molecule stripes 14 ) have been designed and studied. Many of the above systems are accessible only owing to the scanning tunneling microscopy (STM).…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of constant current scanning tunneling spectroscopy in Pb overlayers

et al. 2011

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We present a theoretical study of the constant current scanning tunneling spectroscopy of quantum well states localized in Pb(111) overlayers on Cu(111) surfaces. The distance-voltage characteristic of the tunneling junction is obtained with a mixed approach. The wave packet propagation technique is applied to describe electron tunneling from the tip into the sample, and the density functional calculations provide the necessary inputs for the one-dimensional model potential representation of the system. The excited-state population decay mechanisms via inelastic electron-electron and electron-phonon interactions are taken into account with a bias-dependent absorbing potential introduced in the metal. Our results are in good agreement with recent experimental studies [Phys. Rev. Lett. 102, 196102 (2009), Phys. Rev. B 81, 205438 (2010)] over the energy range where the free-electron description of the Pb overlayer used here applies. We find that at high bias the quantum well states experience a Stark energy shift and partially acquire a character of field emission resonances. The present model study also sheds light at the experimentally observed departure of the energies of the quantum well states from the particle-in-a-box prediction for the bias above 4 eV. The measured trend can be consistently explained as due to the departure of the realistic Pb band structure in the -L direction from free-electron parabola when the electron momentum approaches the point.

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“…27 These investigations were stimulated by the important role of electronic excitations in various physical and chemical phenomena, such as desorption process, 28 catalytic reactions, 29,30 epitaxial growth, 31 and many others. Significant progress has been achieved in the understanding of different mechanisms of the decay of the electronic excitations.…”

Section: Introductionmentioning

confidence: 99%

Inelastic electron-electron scattering for surface states on Cu(110) and Ag(110)

2011

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Many-body electron-electron scattering contribution to the decay rate of electron and hole excitations on the (110) surface of copper and silver is calculated within GW approximation for electron self-energy. The band structure is described using a two-dimensional model pseudopotential, which precisely reproduces the surface electronic structure at the Y point. Combined with the previously calculated electron-phonon contribution, our result for the occupied state on Cu(110) agrees well with the available photoemission data.

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

Cited by 20 publications

References 21 publications

Tunable Quantum Dot Arrays Formed from Self-Assembled Metal-Organic Networks

Tunable Quantum Dot Arrays Formed from Self-Assembled Metal-Organic Networks

Theoretical study of constant current scanning tunneling spectroscopy in Pb overlayers

Inelastic electron-electron scattering for surface states on Cu(110) and Ag(110)

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