139 citations · 466 across the 19 of their papers we have counts for
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Effective action, magnetic excitations and quantum fluctuations in lightly doped single layer cuprates
Alexander I. Milstein, Oleg P. Sushkov
We consider the extended 2D model at zero temperature. Parameters of the model corresponds to doping by holes. Using the low doping effective action we demonstrate tha…
Anisotropies in insulating LaSrCuO: angular resolved photoemission and optical absorption
O. P. Sushkov, Wenhui Xie, O. Jepsen +2
Due to the orthorhombic distortion of the lattice, the electronic hopping integrals along the and diagonals, the orthorhombic directions, are slightly different. We calcula…
Screening of Coulomb Impurities in Graphene
Ivan S. Terekhov, Alexander I. Milstein, Valeri N. Kotov +1
We calculate exactly the vacuum polarization charge density in the field of a subcritical Coulomb impurity, , in graphene. Our analysis is based on the exact electron Green…
AC Hopping Magnetotransport Across the Spin Flop Transition in Lightly Doped La_2CuO_4
Oleg P. Sushkov, Valeri N. Kotov
The weak ferromagnetism present in insulating La_{2}CuO_4 at low doping leads to a spin flop transition, and to transverse (interplane) hopping of holes in a strong external magnet…
Effective action of the weakly doped t-J model and spin-wave excitations in the spin-glass phase of La_{2-x}Sr_xCuO_4
Andreas Luscher, Alexander I. Milstein, Oleg P. Sushkov
We derive the low-energy effective field theory of the extended t-J model in the regime of light doping. The action includes a previously unknown Berry phase term, which is discuss…