INVESTIGADORES
ARLEGO Marcelo Jose Fabian
artículos
Título:
Interplay between quasiperiodicity and disorder in quantum spin chains in a magnetic field.
Autor/es:
ARLEGO MARCELO
Revista:
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
Referencias:
Año: 2002 p. 52419 - 52422
ISSN:
0163-1829
Resumen:
We study the interplay between disorder and a quasi periodic coupling array in an external magnetic field in a spin-1/2 XXZ chain. A simple real space decimation argument is used to estimate the magnetization values where plateaux show up. The latter are in good agreement with exact diagonalization results on fairly long XX chains. Spontaneous susceptibility properties are also studied, finding a logarithmic behaviour similar to the homogeneously disordered case.
