30 citations · 107 across the 11 of their papers we have counts for
9 papers · 1 filter
Divergence of the orbital nuclear magnetic relaxation rate in metals
A. Knigavko, B. Mitrovic, K. V. Samokhin
We analyze the nuclear magnetic relaxation rate due to the coupling of nuclear spin to the orbital moment of itinerant electrons in metals. In the clean non--intera…
Elastic anomalies in HoNi2B2C single crystals
V. D. Fil, A. Knigavko, A. N. Zholobenko +2
We have measured temperature and magnetic field dependencies of the sound velocities and the sound attenuation in HoNi2B2C single crystals. The main result is a huge softening the…
Optical sum increase due to electron undressing
A. Knigavko, J. P. Carbotte, F. Marsiglio
For a system with a fixed number of electrons, the total optical sum is a constant, independent of many-body interactions, of impurity scattering and of temperature. For a single b…
Inversion of ARPES measurements in high Tc cuprates
S. Verga, A. Knigavko, F. Marsiglio
Recent energy dispersion measurements in several families of the hole-doped copper oxides have revealed a kink in the energy vs. momentum relation. These have tentatively been iden…
Expansion in the "distance" from Hc2(T) line for the mixed state of BCS superconductors
Anton Knigavko, Frank Marsiglio
We develop a description of the mixed state of type II superconductivity valid within a wide range of temperatures and external magnetic fields. It is based on the quasiclassical v…
Constraints from and the isotope effect for MgB
A. Knigavko, F. Marsiglio
With the constraint that K, as observed for MgB, we use the Eliashberg equations to compute possible allowed values of the isotope coefficient, . We find that whi…
The puzzle of 90 degree reorientation in the vortex lattice of borocarbide superconductors
Anton Knigavko, Baruch Rosenstein
We explain 90 degree reorientation in the vortex lattice of borocarbide superconductors on the basis of a phenomenological extension of the nonlocal London model that takes full ac…
Nature of 45 degree vortex lattice reorientation in tetragonal superconductors
A. Knigavko, V. G. Kogan, B. Rosenstein +1
The transformation of the vortex lattice in a tetragonal superconductor which consists of its 45 degree reorientation relative to the crystal axes is studied using the nonlocal Lon…
Magnetic skyrmion lattices in heavy fermion superconductor UPt3
A. Knigavko, B. Rosenstein
Topological analysis of nearly SO(3)_{spin} symmetric Ginzburg--Landau theory, proposed for UPt by Machida et al, shows that there exists a new class of solutions carrying tw…