Pregled bibliografske jedinice broj: 927742
Exact diagonalization of a small strongly coupled electron-phonon system in HTSC
Exact diagonalization of a small strongly coupled electron-phonon system in HTSC // Bulletin of Americal Physical Society
Anaheim (CA), Sjedinjene Američke Države: American Physical Society, 1990. str. 676-676 (predavanje, nije recenziran, sažetak, znanstveni)
CROSBI ID: 927742 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Exact diagonalization of a small strongly coupled electron-phonon system in HTSC
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, 1990, 676-676
Skup
APS March Meeting
Mjesto i datum
Anaheim (CA), Sjedinjene Američke Države, 12.03.1990. - 16.03.1990
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Nije recenziran
Ključne riječi
exact diagonalization, three-level model
Sažetak
A three-level model is proposed for the IR and Raman response of coupled phonons and charge transfer fluctuations between the conducting planes and chain in YBa_2Cu_3O_7. The model is solved by exact diagonalization with a variational Hilbert space. For this simple model we find that 1000 quantum states are enough even for very strong electron-phonon coupling. The obtained results are compared with analytical ones, particularly with the random phase approximation valid only for small electron-phonon coupling constants. Raman and IR spectra are also discussed.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
