Napredna pretraga

Pregled bibliografske jedinice broj: 270623

Holstein light quantum polarons on the one-dimensional lattice


Barišić, Osor-Slaven
Holstein light quantum polarons on the one-dimensional lattice // Physical Review B, 7321 (2006), 21. (međunarodna recenzija, članak, znanstveni)


Naslov
Holstein light quantum polarons on the one-dimensional lattice

Autori
Barišić, Osor-Slaven

Izvornik
Physical Review B (1098-0121) 7321 (2006), 21;

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Molecular-crystal model; electron-phonon; field-theory; barrier; manganites; transition; discrete; spectra; system; band

Sažetak
The polaron formation is investigated in the intermediate regime of the Holstein model by using an exact diagonalization technique for the one-dimensional infinite lattice. The numerical results for the electron and phonon propagators are compared with the nonadiabatic weak- and strong-coupling perturbation theories, as well as with the harmonic adiabatic approximation. A qualitative explanation of the crossover regime between the self-trapped and free-particle-like behaviors, not well-understood previously, is proposed. It is shown that a fine balance of nonadiabatic and adiabatic contributions determines the motion of small polarons, making them light. A comprehensive analysis of spatially and temporally resolved low-frequency lattice correlations that characterize the translationally invariant polaron states is derived. Various behaviors of the polaronic deformation field, ranging from classical adiabatic for strong couplings to quantum nonadiabatic for weak couplings, are discussed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
0035007

Ustanove
Institut za fiziku, Zagreb

Autor s matičnim brojem:
Osor-Slaven Barišić, (226036)

Časopis indeksira:


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