My main research interests is Strongly Correlated Electron Systems.

Among many subjects in this topic I 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 I have much experience to derive information of the mentioned models by it. To obtain more accurate results at the other hand I 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 my 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 componds 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.

I am also working on the collective phenomena of cold glasses. That is the effect of magnetic field on multi-component glasses at very low temprature (few mili-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 my publications below.

However I am always open to discuss on the new topics.