Extreme ultrafast dynamics of quasiparticles excited in surface electronic bands

Lazić, Predrag; Silkin, Vjaćeslav M.; Chulkov, Evgenij V.; Echenique, Pedro M.; Gumhalter, Branko (2006) Extreme ultrafast dynamics of quasiparticles excited in surface electronic bands. Physical Review Letters, 97 (8). 086801-1. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v97/i8/e086801

Abstract

We develop a many-body description of nonadiabatic dynamics of quasiparticles in surface bands valid on the extreme ultrashort time scale by combining the formalism for calculation of quasiparticle survival probabilities with the selfconsistent treatment of electronic response of the system. Applying this approach to the benchmark Cu(111) surface we assess the behavior and intervals of preasymptotic electron and hole dynamics in surface bands and locate the transition to asymptotic regime of exponential quasiparticle decay characterized by the corrected Fermi golden rule-type of transition rate. The general validity of these findings enables distinguishing the various regimes of ultrafast electron dynamics that may be revealed in time resolved experiments.

Item Type:

Article

Uncontrolled Keywords:

surface electronic bands; ultrafast dynamics; decay; decoherence

Subjects:

NATURAL SCIENCES > Physics

Divisions:

Theoretical Physics Division

Projects:

Project title	Project leader	Project code	Project type
Fizika površina, mikrostruktura i jako koreliranih sistema	UNSPECIFIED	0098001	UNSPECIFIED
Modeliranje svojstava mikro- i nanostrukturiranih površina	UNSPECIFIED	0035017	UNSPECIFIED

Depositing User:

Predrag Lazić

Date Deposited:

31 Jan 2013 14:22

Last Modified:

22 Jan 2014 15:19

URI:

http://fulir.irb.hr/id/eprint/489

DOI:

10.1103/PhysRevLett.97.086801