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Femtosecond nonequilibrium dynamics in quasi-1D CDW systems K0.3MoO3 and RB0.3MoO3


Tomeljak, Andrej; Kavčič, Blaž; Schäfer, Hanjo; Kabanov, Viktor; Mihailovič, Dragan; Starešinić, Damir; Biljaković, Katica; Demšar, Jure
Femtosecond nonequilibrium dynamics in quasi-1D CDW systems K0.3MoO3 and RB0.3MoO3 // Physica B, 404 (2009), 3-4; 548-551 doi:10.1016/j.physb.2008.11.049 (međunarodna recenzija, kratko priopcenje, znanstveni)


Naslov
Femtosecond nonequilibrium dynamics in quasi-1D CDW systems K0.3MoO3 and RB0.3MoO3

Autori
Tomeljak, Andrej ; Kavčič, Blaž ; Schäfer, Hanjo ; Kabanov, Viktor ; Mihailovič, Dragan ; Starešinić, Damir ; Biljaković, Katica ; Demšar, Jure

Izvornik
Physica B (0921-4526) 404 (2009), 3-4; 548-551

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, kratko priopcenje, znanstveni

Ključne riječi
Charge density waves; femtosecond real-time dynamics; collective modes

Sažetak
Here we report on detailed studies of the photoexcited carrier and collective mode dynamics in prototype quasi-1D charge density wave (CDW) systems K0:3MoO3 and Rb0:3MoO3 focusing on their low temperature and low excitation range. We show that the order parameter relaxation dynamics are inconsistent with the Rothwarf– Taylor model describing the relaxation of the coupled quasi-particle and high frequency phonon system in a system with a narrow gap in the density of states. Therefore we propose an alternative model that accounts for the photoexcited carrier relaxation phenomena commonly observed in CDW systems.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
035-0352827-2842 - Kompleksni modulirani sistemi: nova osnovna stanja, defekti i magnetski efekti (Katica Biljaković, )

Ustanove
Institut za fiziku, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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