Pregled bibliografske jedinice broj: 581989
Bipolarons and polarons in the Holstein-Hubbard model : Analogies and differences
Bipolarons and polarons in the Holstein-Hubbard model : Analogies and differences // European physical journal B : condensed matter physics, 85 (2012), 3; 111-123 doi:10.1140/epjb/e2012-21079-2 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 581989 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Bipolarons and polarons in the Holstein-Hubbard model : Analogies and differences
Autori
Barišić, Osor-Slaven ; Barišić, Slaven
Izvornik
European physical journal B : condensed matter physics (1434-6028) 85
(2012), 3;
111-123
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
bipolaron; polaron; Holstein-Hubbard; electron; phonon; coupling
Sažetak
The single bipolaron problem is examined in the context of the 1D Holstein-Hubbard model, emphasizing analogies and differences with respect to the complementary single polaron physics. The bipolaron band structure below the phonon threshold is revealed, showing a complex relationship between numerous excited bands as the adiabatic limit is approached. Light bipolarons with significant binding energy, the stability of large bipolarons, the small to large bipolaron crossover as a function of the Hubbard repulsion, as well as the bipolaron dissociation, are investigated in detail, disentangling adiabatic, nonadiabatic and lattice coarsening effects. It is emphasized that condensation of bipolarons occurs in the dilute limit only at very low temperatures.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
035-0000000-3187 - Kriticne pojave i sustavi izvan ravnoteze (Uzelac, Katarina, MZOS ) ( CroRIS)
119-1191458-0512 - Niskodimenzionalni jako korelirani vodljivi sustavi (Barišić, Slaven, MZOS ) ( CroRIS)
Ustanove:
Institut za fiziku, Zagreb,
Prirodoslovno-matematički fakultet, Zagreb
Poveznice na cjeloviti tekst rada:
Pristup cjelovitom tekstu rada doi
epjb.edpsciences.org
link.springer.com
arxiv.org
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
