Catalogo Articoli (Spogli Riviste)
OPAC HELP
Titolo: Excitation spectrum of Hubbard model with infinite electron repulsion on strip-type triangular lattices
Autore: Cheranovskii, VO; Ezerskaya, EV; Krikunov, MV;
- Indirizzi:
- Kharkov Natl Univ, UA-61077 Kharkov, Ukraine Kharkov Natl Univ Kharkov Ukraine UA-61077 iv, UA-61077 Kharkov, Ukraine Middle E Tech Univ, Dept Chem, TR-06531 Ankara, Turkey Middle E Tech UnivAnkara Turkey TR-06531 Chem, TR-06531 Ankara, Turkey
- Titolo Testata:
- INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
fascicolo: 4,
volume: 81,
anno: 2001,
pagine: 253 - 259
- SICI:
- 0020-7608(20010205)81:4<253:ESOHMW>2.0.ZU;2-W
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- MAGNETIC-PROPERTIES; GROUND-STATE; LADDER;
- Keywords:
- ladder compounds; Hubbard model; ground state; stability of ferromagnetic state; magnetic polarons;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Citazioni:
- 12
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Cheranovskii, VO Kharkov Natl Univ, UA-61077 Kharkov, Ukraine Kharkov NatlUniv Kharkov Ukraine UA-61077 kov, Ukraine
-
-
-
- Citazione:
- V.O. Cheranovskii et al., "Excitation spectrum of Hubbard model with infinite electron repulsion on strip-type triangular lattices", INT J QUANT, 81(4), 2001, pp. 253-259
Abstract
The estimations of the stability region of the lattice ferromagnetic ground state in the space of model parameters are found. For the triangular lattice strip formed by L segments with the total number of electrons N = L + 1we derived the effective Hamiltonians describing the low-energy states of the strips and obtained the analytical estimations for above stability region. The possibility of the magnetic transition with the jump of the ground-state spin between minimal and maximal values has also been shown. For the strip with N = L and an alternating value of the one-site potential energy,we have obtained the exact relation between electron parameters, which provides the ferromagnetic character of the lattice ground state. (C) 2001 John Wiley & Sons, Inc.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/06/13 alle ore 00:51:34