Pregled bibliografske jedinice broj: 990455
Disentangling thermal and nonthermal excited states in a charge-transfer insulator by time- and frequency-resolved pump-probe spectroscopy
Disentangling thermal and nonthermal excited states in a charge-transfer insulator by time- and frequency-resolved pump-probe spectroscopy // Physical Review B, 80 (2009), 23; 235129-1 doi:10.1103/physrevb.80.235129 (međunarodna recenzija, članak, znanstveni)
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Naslov
Disentangling thermal and nonthermal excited states in a charge-transfer insulator by time- and frequency-resolved pump-probe spectroscopy
Autori
Giannetti, Claudio ; Zgrablić, Goran ; Consani, Cristina ; Crepaldi, Alberto ; Nardi, Damiano ; Ferrini, Gabriele ; Dhalenne, G. ; Revcolevschi, A. ; Parmigiani, Fulvio
Izvornik
Physical Review B (1098-0121) 80
(2009), 23;
235129-1
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
strongly correlated systems ; nonequilibrium dynamics ; CuGeO3 ; pump-probe ; femtosecond
Sažetak
Time- and frequency-resolved pump-probe optical spectroscopy is used to investigate the effects of the impulsive injection of delocalized excitations through a charge-transfer process in insulating CuGeO3. A large broadening of the charge-transfer edge is observed on the sub-ps time scale. The modification of this spectral feature cannot be attributed to the local increase in the effective temperature, as a consequence of the energy absorbed by the pump pulse. The measured modifications of the optical properties of the system are consistent with the creation of a nonthermal state, metastable on the picosecond time scale, after the pump-induced impulsive modification of the electron interactions.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
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
