"Dirac Materials"

Abstract:  Recently a new single layer material --graphene has
been discovered. This is a material where Dirac points in the
fermionic spectrum lead to very unusual properties, such as
transport properties and impurity states. I will argue that
these properties are not unique to graphene and in fact are
a direct consequence of Dirac spectrum in fermionic excitation
sector. Strong similarities with d-wave superconductors,
superfluid 3He, p-wave superconductors and with other materials
exhibiting Dirac electronic spectrum are suggestive and offer
a unifying perspective. I will argue that this discovery
signifies the emergence of a new class of materials, that can be
called **Dirac Materials**, the class where nontrivial properties
emerge as a direct consequence of Dirac spectrum of excitations.
I will address the local electronic properties of graphene such
as impurity states, electronic inhomogeneity and discuss broad
similarities with dirac physice seen in other materials.