A. Malvezzi

activity

19942024

most citedPhase Separation in Electronic Models for Manganites

512 citations · 1.2k across the 25 of their papers we have counts for

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3 papers · 1 filter

cond-mat1995★ 8 cited

The phase diagram of the anisotropic Spin-1 Heisenberg Chain

A. L. Malvezzi, F. C. Alcaraz

We applied the Density Matrix Renormalization Group to the XXZ spin-1 quantum chain. In studing this model we aim to clarify controversials about the point where the massive Haldan…

cond-mat1994

Critical and off-critical properties of the $X X Z$ chain in external homogeneous and staggered magnetic fields

F. C. Alcaraz, A. L. Malvezzi

The phase diagram of the $X X Z$ chain under the influence of homogeneous and staggered magnetic fields is calculated. The model has a rich phase structure with three types of phases…

cond-mat1994★ 1 cited

Tetracritical behaviour in a spin-3/2 quantum chain

A. Malvezzi

Finite-Size-Scaling and Conformal Invariance are used in order to find the phase diagram and critical exponents of a quantum spin chain with spin $S = 3/2$ . The model has a tetracrit…

The phase diagram of the anisotropic Spin-1 Heisenberg Chain

Critical and off-critical properties of the XXZ chain in external homogeneous and staggered magnetic fields

Tetracritical behaviour in a spin-3/2 quantum chain

Critical and off-critical properties of the $X X Z$ chain in external homogeneous and staggered magnetic fields