%0 Journal Article
%A Sasioglu, E.
%A Caliskan, S.
%A Kumru, M.
%T Critical behavior of density of states near Fermi energy in     low-dimensional disordered metals
%J Physical review / B
%V 79
%N 3
%@ 1098-0121
%C College Park, Md.
%I APS
%M PreJuSER-6294
%P 035123
%D 2009
%Z Record converted from VDB: 12.11.2012
%X We study the effect of electron-electron interaction on the one-particle density of states (DOS) rho((d))(epsilon,T) of low-dimensional disordered metals near Fermi energy within the framework of the finite temperature conventional impurity diagram technique. We consider only diffusive limit and, by a geometric resummation of the most singular first-order self-energy corrections via the Dyson equation, we obtain a nondivergent solution for the DOS at low energies while for higher energies the well-known Altshuler-Aronov corrections are recovered. At the Fermi level rho((d))(epsilon,T=0)-> 0, this indicates that interacting disordered two-dimensional and quasi-one-dimensional systems are in insulating state at zero temperature. The obtained results are in good agreement with recent tunneling experiments on two-dimensional GaAs/AlGaAs heterostructures and quasi-one-dimensional doped multiwall carbon nanotubes.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000262978200058
%R 10.1103/PhysRevB.79.035123
%U https://juser.fz-juelich.de/record/6294