Our main research interests is Strongly Correlated Electron Systems. Among many subjects in this topic we specially work on spin systems at low dimensions. Examples of these models are Heisenberg chain and ladders, t-J model and Ferrimagnetic systems.

     The study of low-energy properties of these systems and different phases which may take place via a quantum phase transition by varying a parameter is an interesting topic in this branch of physics when the temperature is zero or sufficiently low. The approach to deal with these models might be usual spin-wave, mean-field or other relevant theories. Quantum Renormalization Group (QRG) is also a technique which we've much experience to derive information of the mentioned models by it. To obtain more accurate results at the other hand We usually implement Lanczos method as an exact diagonalization of a lattice Hamiltonian. Density Matrix Renormalization Group (DMRG) is also another technique which may be used in our study of one-dimensional models to obtain accurate results for larger size of system.      

    Our recent interest is the properties of Molecular Magnets. The magnetic properties of these compounds are obtained by the properties of single magnetic molecule which has the size of few nano-meters.  

    The effect of impurities in terms of the Kondo model is also another topic which we are working.

    We are also working on the collective phenomena of cold glasses. That is the effect of magnetic field on multi-component glasses at very low temperature (few milli Kelvin). The effect of interaction between tunneling centers in a disordered model leads to novel phenomena.

    Charge density plateau in t-J model on ladder geometry is a collaboration with Wuppertal group. This is an analogous to magnetization curve in a magnetic field for charge density excitations. In an area of coupling constants the charge density gap opens which appears as a charge density plateau at some special value of charge density.  

    For more information you may have a look at our publications. However We are always open to discuss on the new topics.