Pregled bibliografske jedinice broj: 927750
Polarons, Bipolarons, and Nonlinear Phonons in the Holstein Model
Polarons, Bipolarons, and Nonlinear Phonons in the Holstein Model // Bulletin of Americal Physical Society
Cincinnati (OH), Sjedinjene Američke Države: American Physical Society, 1991. str. 612-612 (predavanje, nije recenziran, sažetak, znanstveni)
CROSBI ID: 927750 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Polarons, Bipolarons, and Nonlinear Phonons in the Holstein Model
Autori
Trugman, S.A. ; Batistić, I.
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Bulletin of Americal Physical Society
/ - : American Physical Society, 1991, 612-612
Skup
APS March meeting
Mjesto i datum
Cincinnati (OH), Sjedinjene Američke Države, 18.03.1991. - 22.03.1991
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Nije recenziran
Ključne riječi
Polarons, Bipolarons
Sažetak
The Holstein (small polaron) model is studied for an infinite one-dimensional lattice coupled to optical phonons. We consider both ordinary and highly nonlinear phonons. Results are obtained for one electron and for two electrons with on-site Hubbard repulsion. The polaron and bipolaron systems are studied by creating a large, translation-invariant variational space. The variational space contains states that cannot be represented as a product of coherent states. The Hamiltonian is diagonalized exactly (numerically) in the variational space. We calculate the energy and effective mass of a polaron, and the region of stability, binding energy, and mass of the bipolaron. Implications for superconductivity are discussed.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
