79 citations · 669 across the 39 of their papers we have counts for
39 papers
Low frequency optical conductivity in graphene and in other scale-invariant two-band systems
Ádám Bácsi, Attila Virosztek
We investigate optical transitions of non-interacting electron systems consisting of two symmetric energy bands touching each other at the Fermi energy (e.g. graphene at half filli…
Local density of states and Friedel oscillation in graphene
Ádám Bácsi, Attila Virosztek
We investigate the local density of states and Friedel oscillation in graphene around a well localized impurity in Born approximation. In our analytical calculations Green's functi…
Mean-field quantum phase transition in graphene and in general gapless systems
Ádám Bácsi, Attila Virosztek, László Borda +1
We study the quantum critical properties of antiferromagnetism in graphene at T=0 within mean-field (MF) theory. The resulting exponents differ from the conventional MF exponents,…
Infrared and electronic Raman response of coexisting d-wave density wave and d-wave superconductivity
Andras Vanyolos, Balazs Dora, Attila Virosztek
We present mean-field calculations for the in-plane optical conductivity, the superfluid density, and the electronic Raman susceptibility in quasi two-dimensional systems possessin…
Local density of states and Friedel oscillations around a non-magnetic impurity in unconventional density wave
Andras Vanyolos, Balazs Dora, Attila Virosztek
We present a mean-field theoretical study on the effect of a single non-magnetic impurity in quasi-one dimensional unconventional density wave. The local scattering potential is tr…
Pseudogap enhancement due to magnetic impurities in d-density waves
Balázs Dóra, Kazumi Maki, Attila Virosztek +1
We study the effect of quantum magnetic impurities on d-wave spin density waves (d-SDW). The impurity spins are aligned coherently according to the spin space anisotropy of the con…