139 citations · 466 across the 19 of their papers we have counts for
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Superconducting Spiral Phase in the two-dimensional t-J model
Oleg P. Sushkov, Valeri N. Kotov
We analyse the t-t'-t''-J model, relevant to the superconducting cuprates. By using chiral perturbation theory we have determined the ground state to be a spiral for small doping δ…
Finite nuclear size effect on Lamb shift of s1/2, p1/2, and p3/2 atomic states
A. I. Milstein, O. P. Sushkov, I. S. Terekhov
We consider one-loop self-energy and vacuum polarization radiative corrections to the shift of atomic energy level due to finite nuclear size. Analytic expressions for vacuum polar…
Planar Cu and O hole densities in high-Tc cuprates determined with NMR
J. Haase, O. P. Sushkov, P. Horsch +1
The electric hyperfine interaction observable in atomic spectroscopy for O and Cu ions in various configurations is used to analyze the quadrupole splitting of O and Cu nuclear mag…
A closer look at symmetry breaking in the collinear phase of the Heisenberg Model
R. R. P. Singh, W. Zheng, J. Oitmaa +2
The large limit of the square-lattice Heisenberg antiferromagnet is a classic example of order by disorder where quantum fluctuations select a collinear ground stat…
Long Range Dynamics Related to Magnetic Impurity in the 2D Heisenberg Antiferromagnet
O. P. Sushkov
We consider a magnetic impurity in the two-dimensional Heisenberg antifferomagnet with long range antiferromagnetic order. At low temperature the impurity magnetic susceptibility h…
Enhancement of the electron electric dipole moment in gadolinium garnets
T. N. Mukhamedjanov, V. A. Dzuba, O. P. Sushkov
Effects caused by the electron electric dipole moment (EDM) in gadolinium garnets are considered. Experimental studies of these effects could improve current upper limit on the ele…