39 citations · 250 across the 19 of their papers we have counts for
20 papers
Borromean Criticality in Two Dimensions
Alexandru Golic, Igor Timoshuk, Albert Samoilenka +2
The characteristic feature of counterflow superfluids consisting of components -- the so-called Borromean supercounterfluids (BSCF) -- is the presence of distinct ele…
Microscopic theory of electron quadrupling condensates
Albert Samoilenka, Egor Babaev
Electron pairing at low temperatures leads to superconductivity. A fundamental question is whether more complex states - characterized by order in four-electron composite objects,…
A microscopic study of boundary superconducting states on a honeycomb lattice
Anton Talkachov, Albert Samoilenka, Egor Babaev
We address the problem of boundary s-wave superconductivity on rectangular honeycomb lattices: nanoflakes, armchair and zigzag nanotubes. We discuss how the presence of edges and c…
Counterpart of the Chandrasekhar-Kendall state in noncentrosymmetric superconductors
Julien Garaud, Anatolii Korneev, Albert Samoilenka +3
We demonstrate that superconductors with broken inversion symmetry support a family of stable, spatially localized configurations of the self-knotted magnetic field. These solution…
Ground state fractal crystals
Albert Samoilenka, Egor Babaev
We propose a generalization of the crystalline order: the ground state fractal crystal. We demonstrate that by deriving a simple continuous-space-discrete-field (CSDF) model whose…
Elevated critical temperature at BCS superconductor-band insulator interfaces
Mats Barkman, Albert Samoilenka, Andrea Benfenati +1
We consider the interface between a Bardeen-Cooper-Schrieffer superconductor and non-superconducting band insulator. We show that under certain conditions, such interfaces can have…
Boundary effects in two-band superconductors
Andrea Benfenati, Albert Samoilenka, Egor Babaev
We present a microscopic study of the behavior of the order parameters near boundaries of a two-band superconducting material, described by the standard tight-binding Bardeen-Coope…
Microscopic derivation of superconductor-insulator boundary conditions for Ginzburg-Landau theory revisited. Enhanced superconductivity at boundaries with and without magnetic field
Albert Samoilenka, Egor Babaev
Using the standard Bardeen-Cooper-Schrieffer (BCS) theory, we revise microscopic derivation of the superconductor-insulator boundary conditions for the Ginzburg-Landau (GL) model.…
Reply to the Comment on "Surface Pair-Density-Wave Superconducting and Superfluid States"
Mats Barkman, Andrea Benfenati, Albert Samoilenka +1
The recent Comment by Vorontsov [arXiv:2007.13696] claims that surface pair-density-wave superconductivity with critical temperature higher than the bulk FFLO critical temperature…
Ring solitons and soliton sacks in imbalanced fermionic systems
Mats Barkman, Albert Samoilenka, Thomas Winyard +1
We show that in superfluids with fermionic imbalance and uniform ground state, there are stable solitons. These solutions are formed of radial density modulations resulting in noda…
Spiral magnetic field and bound states of vortices in noncentrosymmetric superconductors
Albert Samoilenka, Egor Babaev
We discuss the unconventional magnetic response and vortex states arising in noncentrosymmetric superconductors with chiral octahedral and tetrahedral ( or ) symmetry. We mic…
Pair-density-wave superconductivity of faces, edges and vertices in systems with imbalanced fermions
Albert Samoilenka, Mats Barkman, Andrea Benfenati +1
We describe boundary effects in superconducting systems with Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconducting instability, using Bogoliubov-de-Gennes and Ginzburg-Landau (GL…
Boundary states with elevated critical temperatures in Bardeen-Cooper-Schrieffer superconductors
Albert Samoilenka, Egor Babaev
Bardeen-Cooper-Schrieffer (BCS) theory describes a superconducting transition as a single critical point where the gap function or, equivalently, the order parameter vanishes unifo…
Synthetic nuclear Skyrme matter in imbalanced Fermi superfluids with a multicomponent order parameter
Albert Samoilenka, Filipp N. Rybakov, Egor Babaev
Cooper-pair formation in a system of imbalanced fermions leads to the well-studied Fulde-Ferrell or Larkin-Ovchinnikov superfluid state. In the former case the system forms spontan…
Surface pair-density-wave superconducting and superfluid states
Mats Barkman, Albert Samoilenka, Egor Babaev
Fulde, Ferrell, Larkin, and Ovchinnikov (FFLO) predicted inhomogeneous superconducting and superfluid ground states, spontaneously breaking translation symmetries. In this Letter,…
Magnetic Hopfions in the Faddeev-Skyrme-Maxwell model
A. Samoilenka, Ya. Shnir
We construct new solutions of the Faddeev-Skyrme-Maxwell model, which represent Hopf solitons coupled to magnetic fluxes. It turns out that coupling to the magnetic field allows fo…
Gauged merons
A. Samoilenka, Ya. Shnir
We construct new class of regular soliton solutions of the gauged planar Skyrme model on the target space with fractional topological charges in the scalar sector. These fiel…
Fractional Hopfions in the Faddeev-Skyrme model with a symmetry breaking potential
A. Samoilenka, Ya. Shnir
We construct new solutions of the Faddeev-Skyrme model with a symmetry breaking potential admitting vacuum. It includes, as a limiting case, the usual symmetry breaki…
Gauged Baby Skyrme Model with Chern-Simons term
A. Samoilenka, Ya. Shnir
The properties of the multisoliton solutions of the (2+1)-dimensional Maxwell-Chern-Simons-Skyrme model are investigated numerically. Coupling to the Chern-Simons term allows for e…
Gauged Aloof Baby Skyrme Model
A. Samoilenka, Ya. Shnir
We present a study of gauged modification of the 2+1 dimensional planar Skyrme model with a particular choice of the symmetry breaking potential term which combines a short-…