262 citations · 791 across the 22 of their papers we have counts for
12 papers · 1 filter
Magnetically induced polarization in centrosymmetric bonds
Igor Solovyev, Ryota Ono, Sergey Nikolaev
We reveal the microscopic origin of electric polarization induced by noncollinear magnetic order. We show that in Mott insulators, such is given by all possible…
Skyrmionic order and magnetically induced polarization change in lacunar spinel compounds GaVS and GaMoS: comparative theoretical study
S. A. Nikolaev, I. V. Solovyev
We show how low-energy electronic models derived from the first-principles electronic structure calculations can help to rationalize the magnetic properties of two lacunar spinel c…
Fingerprints of spin-current physics on magnetoelectric response in the spin- magnet BaCuGeO
Ryota Ono, Sergey Nikolaev, Igor Solovyev
The single-site anisotropy vanishes for the spin-1/2 as a consequence of Kramers degeneracy. We argue that similar property holds for the magnetically induced electric polarization…
Quantum spin liquid and cluster Mott insulator phases in the MoO magnets
S. A. Nikolaev, I. V. Solovyev, S. V. Streltsov
We unveil the microscopic origin of largely debated magnetism in the MoO cluster systems. Upon considering an extended Hubbard model at 1/6 filling on the anisotropic k…
Localised Magnetism in 2D Electrides
Danis I. Badrtdinov, Sergey A. Nikolaev
In this work, we investigate intrinsic magnetic properties of monolayer electrides LaBr and LaBr, where excess electrons do not reside at any atomic orbital and a…
Realization of anisotropic compass model on the diamond lattice of Cu in CuAlO
S. A. Nikolaev, I. V. Solovyev, A. N. Ignatenko +2
Spin-orbit (SO) Mott insulators are regarded as a new paradigm of magnetic materials, whose properties are largely influenced by SO coupling and featured by highly anisotropic bond…
Microscopic theory of electric polarization induced by skyrmionic order in GaVS
S. A. Nikolaev, I. V. Solovyev
The lacunar spinel GaVS was recently suggested to be a prototype multiferroic material hosting skyrmion lattice states with a sizeable polarization cou…
Nanoskyrmion engineering with -electron materials: Sn monolayer on SiC(0001) surface
Danis I. Badrtdinov, Sergey A. Nikolaev, Alexander N. Rudenko +2
Materials with -magnetism demonstrate strongly nonlocal Coulomb interactions, which opens a way to probe correlations in the regimes not achievable in transition metal compound…
Role of direct exchange and Dzyaloshinskii-Moriya interactions in magnetic properties of graphene derivatives: CF and CH
V. V. Mazurenko, A. N. Rudenko, S. A. Nikolaev +3
According to the Lieb's theorem the ferromagnetic interaction in graphene-based materials with bipartite lattice is a result of disbalance between the number of sites available for…
First-principles study of the magnetic ground state in kagome francisites Cu3Bi(SeO3)2O2X (X=Cl, Br)
S. A. Nikolaev, V. V. Mazurenko, A. A. Tsirlin +1
We explore magnetic behavior of kagome francisites Cu3Bi(SeO3)2O2X (X = Cl and Br) using first-principles calculations. To this end, we propose an approach based on the Hubbard mod…
Spin dependence of ferroelectric polarization in the double exchange model for manganites
I. V. Solovyev, S. A. Nikolaev
The double exchange (DE) model is systematically applied for studying the coupling between ferroelectric (FE) and magnetic orders in several prototypical types of multiferroic mang…
Double-exchange theory of ferroelectric polarization in orthorhombic manganites with twofold periodic magnetic texture
I. V. Solovyev, S. A. Nikolaev
We argue that many aspects of improper ferroelectric activity in orthorhombic manganites can be rationalized by considering the limit of infinite intra-atomic splitting between the…