Pregled bibliografske jedinice broj: 239903
Optical and Raman signatures of polarons in mixed-valent linear chain metal complexes with halogen bridges
Optical and Raman signatures of polarons in mixed-valent linear chain metal complexes with halogen bridges // Progress of Theoretical Physics Supplement, 113 (1993), 133-141 (međunarodna recenzija, članak, znanstveni)
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Naslov
Optical and Raman signatures of polarons in mixed-valent linear chain metal complexes with halogen bridges
Autori
Bishop, Alan R. ; Batistić, Ivo ; Huang, X.Z. ; Saxena, Avadh B.
Izvornik
Progress of Theoretical Physics Supplement (0375-9687) 113
(1993);
133-141
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
vibrational properties; polaronic defects; charge-density-wave; valence localized compound; ion-ion electrostatic repulsion; bipolarons; PtCl; PtCl; Raman frequencies
Sažetak
The vibrational (Raman) and optical properties associated with the ground state and polaronic defects are compared and contrasted for the charge-density-wave PtX materials belonging to two different regimes: the highly valence localized compound PtCl and the more valence delocalized compound PtBr. The model for PtCl explicitly includes nearest-neighbor Coulomb attraction and metal ion-ion electrostatic repulsion: with increasing valence delocalization this reduces to the linear Peierls-Hubbard model used for PtBr. The results agree well with the available experimental data for PtCl and PtBr. Buckling of Cl atoms out of the chain axis is found to be important in order to obtain the observed Raman frequencies for electron polarons and bipolarons in PtCl.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- SCI-EXP, SSCI i/ili A&HCI
Uključenost u ostale bibliografske baze podataka::
- The INSPEC Science Abstracts series
