5 papers
First-order phase transition between superconductivity and charge/spin-density wave as the reason of their coexistence in organic metals
Seidali S. Seidov, Vladislav D. Kochev, Pavel D. Grigoriev
The interplay between superconductivity (SC) and spin/charge density wave (DW) in organic metals shows many similarities to high- superconductors. It also contains many puzzle…
Loss rate of ultracold neutrons due to the absorption by trap walls in large material traps
Pavel D. Grigoriev, Vladislav D. Kochev, Victor A. Tsyplukhin +2
The most accurate neutron lifetime measurements now use the material or magnetic traps of ultracold neutrons (UCN). The precision of these experiments is determined by the accuracy…
A method for measuring deviation from Lambert diffuse scattering law of ultracold neutrons on material walls
P. D. Grigoriev, V. D. Kochev, V. A. Tsyplukhin +2
Modeling the motion of ultracold neutrons (UCNs) is crucial for assessing their losses, accurately measuring their lifetime, and describing other experiments. In material traps, it…
Numerical Calculation of Electric Field Enhancement in Neutron Traps with Rough Walls Coated with Superfluid Helium
V. D. Kochev, T. I. Mogilyuk, S. S. Kostenko +1
A film of liquid helium on the surface of material traps for ultracold neutrons protects the neutrons from being absorbed by the trap walls. By using surface roughness and an elect…
Anisotropic zero-resistance onset in organic superconductors
Vladislav D. Kochev, Kaushal K. Kesharpu, Pavel D. Grigoriev
We study the coexistence of superconductivity (SC) and density-wave state and reconcile various puzzling experimental data in organic superconductors (TMTSF)PF and (TMT…