165 citations · 1.9k across the 79 of their papers we have counts for
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Charge density plateaux and insulating phases in the model with ladder geometry
A. Fledderjohann, A. Langari, K. -H. Muetter
We discuss the occurrence and the stability of charge density plateaux in ladder-like systems (at zero magnetization M=0) for the cases of 2- and 3-leg ladders. Starting from…
Superfluid-spiral state of quantum ferrimagnets in magnetic field
M. Abolfath, A. Langari
We study the phase diagram of one-dimensional quantum ferrimagnets by using a numerical exact diagonalization of a finite size system along with a field-theoretical non-linear …
Phase diagram of ferrimagnetic ladders with bond-alternation
A. Langari, M. Abolfath, M. A. Martin-Delgado
We study the phase diagram of a 2-leg bond-alternation spin-(1/2, 1) ladder for two different configurations using a quantum renormalization group approach. Although d-dimensional…
Quantum Ferrimagnets
M. Abolfath, H. Hamidian, A. Langari
We study quantum ferrimagnets in one, two, and three dimensions by using a variety of methods and approximations. These include: (i) a treatment based on the spin coherent state pa…