S. Eich (Avtor), A. Stange (Avtor), A. V. Carr (Avtor), Jurij Urbančič (Avtor), T. Popmintchev (Avtor), M. Wiesenmayer (Avtor), K. Jansen (Avtor), A. Ruffing (Avtor), S. Jakobs (Avtor), T. Rohwer (Avtor)

Povzetek

Time- and angle-resolved photoemission spectroscopy (trARPES) using femtosecond extreme ultraviolet high harmonics has recently emerged as a powerful tool for investigating ultrafast quasiparticle dynamics in correlated-electron materials. However, the full potential of this approach has not yet been achieved because, to date, high harmonics generated by 800 nm wavelength Ti:Sapphire lasers required a trade-off between photon flux, energy and time resolution. Photoemission spectroscopy requires a quasi-monochromatic output, but dispersive optical elements that select a single harmonic can significantly reduce the photon flux and time resolution. Here we show that 400 nm driven high harmonic extreme-ultraviolet trARPES is superior to using 800 nm laser drivers since it eliminates the need for any spectral selection, thereby increasing photon flux and energy resolution to <150 meV while preserving excellent time resolution of about 30 fs.

Ključne besede

angle-resolved photoemission spectroscopy;ARPES;high harmonic generation;ultrafast surface science;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UNG - Univerza v Novi Gorici
UDK: 54
COBISS: 4770299 Povezava se bo odprla v novem oknu
ISSN: 0368-2048
Št. ogledov: 4470
Št. prenosov: 0
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

URN: URN:SI:UNG
Vrsta dela (COBISS): Delo ni kategorizirano
Strani: str. 231-236
Zvezek: ǂVol. ǂ195
Čas izdaje: Aug. 2014
DOI: 10.1016/j.elspec.2014.04.013
ID: 9603397