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Naslov:Self-amplified photo-induced gap quenching in a correlated electron material
Avtorji:ID Stefan, Mathias, Physical Institute, University of Göttingen (Avtor)
ID Steffen, Eich, Department of Physics, Universityof Kaiserslautern (Avtor)
ID Urbančič, Jurij, Department of Physics, Universityof Kaiserslautern (Avtor), et al.
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Capturing the dynamic electronic band structure of a correlated material presents a powerful capability for uncovering the complex couplings between the electronic and structural degrees of freedom. When combined with ultrafast laser excitation, new phases of matter can result, since far-from-equilibrium excited states are instantaneously populated. Here, we elucidate a general relation between ultrafast non-equilibrium electron dynamics and the size of the characteristic energy gap in a correlated electron material. We show that carrier multiplication via impact ionization can be one of the most important processes in a gapped material, and that the speed of carrier multiplication critically depends on the size of the energy gap. In the case of the charge-density wave material 1T-TiSe 2 , our data indicate that carrier multiplication and gap dynamics mutually amplify each other, which explains—on a microscopic level—the extremely fast response of this material to ultrafast optical excitation. Self-amplified photo-induced gap quenching in a correlated electron material. Available from: https://www.researchgate.net/publication/308804379_Self-amplified_photo-induced_gap_quenching_in_a_correlated_electron_material [accessed Apr 20, 2017].
Ključne besede:high harmonic generation, charge-density wave material, 1T-TiSe2, non-equilibrium electron dynamics, ultrafast surface science
Leto izida:2016
Št. strani:8
Številčenje:2015, 7
PID:20.500.12556/RUNG-3066-89df4357-1f14-2588-2b6f-15a29aebc806 Novo okno
COBISS.SI-ID:4770043 Novo okno
DOI:DOI: 10.1038/ncomms12902 Novo okno
NUK URN:URN:SI:UNG:REP:0QU6HIQH
Datum objave v RUNG:20.04.2017
Število ogledov:5659
Število prenosov:0
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Gradivo je del revije

Naslov:Nature Communications
Založnik:Nature Publishing Group: Nature Communications
Leto izida:2016
ISSN:2041-1723

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