Pouyan Ghaemi research

Topological insulators are new phase of matter with many novel features and potential for different applications. Although most of theoretical studies are focused on the properties of truly insulating topological insulators, many of the topological insulators, in the form found in nature, are indeed conducting. They can also become superconducting at low enough temperature. Some of my recent works has been focused on the properties of superconducting phase of topological insulators, where we showed that structure Andreev states in the vortices and Josephson junctions on the doped topological insulators is different from ordinary metals. Moreover we showed that these features disappear at a critical doping level which can be derived using features of the Fermi surfaces of doped topological insulators. I am also interested in graphene; particularly in the novel electronic states that can be realized in graphene by inducing elastic deformation in its single layer lattice.

Phys. Rev. B 87, 035401 (2013)
Phys. Rev. Lett. 109, 237009 (2012)

Phys. Rev. B 87, 155422 (2013)
Phys. Rev. B 86, 081403(R) (2012)
Phys. Rev. Lett. 108, 266801 (2012)