Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Nonadiabatic dynamics of electron scattering from adsorbates in surface bands (CROSBI ID 144935)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Gumhalter, Branko ; Šiber, Antonio ; Buljan, Hrvoje ; Fauster, Thomas Nonadiabatic dynamics of electron scattering from adsorbates in surface bands // Physical review. B, Condensed matter and materials physics, 78 (2008), 15; 155410-1-155410-15. doi: 10.1103/PhysRevB.78.155410

Podaci o odgovornosti

Gumhalter, Branko ; Šiber, Antonio ; Buljan, Hrvoje ; Fauster, Thomas

engleski

Nonadiabatic dynamics of electron scattering from adsorbates in surface bands

We present a comparative study of nonadiabatic dynamics of electron scattering in quasi-two-dimensional surface band which is induced by the long-range component of the interactions with a random array of adsorbates. Using three complementary model descriptions of intraband spatiotemporal propagation of quasiparticles that go beyond the single-adsorbate scattering approach we are able to identify distinct subsequent regimes of evolution of an electron following its promotion into an unoccupied band state: (i) early quadratic or ballistic decay of the initial-state survival probability within the Heisenberg uncertainty window, (ii) preasymptotic exponential decay governed by the self-consistent Fermi golden rule scattering rate, and (iii) asymptotic decay described by a combined inverse power-law and logarithmic behavior. The developed models are applied to discuss the dynamics of intraband adsorbate-induced scattering of hot electrons excited into the n=1 image-potential band on Cu(100) surface during the first stage of a two-photon photoemission process. Estimates of crossovers between the distinct evolution regimes enable assessments of the lifespan of a standard quasiparticle behavior and thereby of the range of applicability of the widely used Fermi golden rule and optical Bloch equations approach for description of adsorbate-induced quasiparticle decay and dephasing in ultrafast experiments.

quantum dynamics; scattering; adsorbates; impurities; surfaces; non-adiabatic

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

78 (15)

2008.

155410-1-155410-15

objavljeno

1098-0121

10.1103/PhysRevB.78.155410

Povezanost rada

Fizika

Poveznice
Indeksiranost