Magnetization Curves of Antiferromagnetic Heisenberg Spin-½ Ladders

Magnetization processes of spin-1/2 Heisenberg ladders are studied using strong-coupling expansions, numerical diagonalization of finite systems and a bosonization approach. We find that the magnetization exhibits plateaux as a function of the applied field at certain rational fractions of the satur...

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Detalles Bibliográficos
Autores principales: Cabra, Daniel Carlos, Honecker, Andreas, Pujol, Pierre
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 1997
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123587
Aporte de:SEDICI (UNLP) de Universidad Nacional de La Plata Ver origen
Descripción
Sumario:Magnetization processes of spin-1/2 Heisenberg ladders are studied using strong-coupling expansions, numerical diagonalization of finite systems and a bosonization approach. We find that the magnetization exhibits plateaux as a function of the applied field at certain rational fractions of the saturation value. Our main focus are ladders with 3 legs where plateaux with magnetization one third of the saturation value are shown to exist.