40 citations · 109 across the 7 of their papers we have counts for
7 papers
Role of isotropic and anisotropic Dzyaloshinskii-Moriya interaction on skyrmions, merons and antiskyrmions in the symmetric system
Sandip Bera
The lattice Hamiltonian with the presence of a chiral magnetic isotropic Dzyaloshinskii-Moriya interaction (DMI) in a square and hexagonal lattice is numerically solved to give the…
Topological Superconductivity by Engineering Noncollinear Magnetism in Magnet/ Superconductor Heterostructures: A Realistic Prescription for 2D Kitaev Model
Pritam Chatterjee, Sayan Banik, Sandip Bera +4
We report on a realistic and rather general scheme where noncollinear magnetic textures proximitized with the most common -wave superconductor can appear as the alternative to $…
Floquet transmission in Weyl/multi-Weyl and nodal-line semimetals through a time-periodic potential well
Sandip Bera, Sajid Sekh, Ipsita Mandal
In mesoscopic physics, the application of a time-periodic drive leads to novel transport behaviour, which is absent in the static regimes. Here we consider a quantum pumping protoc…
Floquet scattering of quadratic band-touching semimetals through a time-periodic potential well
Sandip Bera, Ipsita Mandal
We consider tunneling of quasiparticles through a rectangular quantum well, subject to periodic driving. The quasiparticles are the itinerant charges in two-dimensional and three-d…
Length-scale independent skyrmion and meron Hall angles
Sandip Bera, Sudhansu S. Mandal
Motivated by the recent observation [Zeissler et al, Nature Comm. 11, 428 (2020)] of enigmatic radius-independent skyrmion Hall angle in chiral magnets, we derive skyrmion Hall ang…
Skyrmions at Vanishingly Small Dzyaloshinskii-Moriya Interaction or Zero Magnetic Field
Sandip Bera, Sudhansu S. Mandal
By introducing biquadratic together with usual bilinear ferromagnetic nearest neighbor exchange interaction in a square lattice, we find that the energy of the spin-wave mode is mi…
Theory of skyrmion, meron, anti-skyrmion and anti-meron in chiral magnets
Sandip Bera, Sudhansu S. Mandal
We find closed-form solution of the Euler equation for a chiral magnet in terms of a skyrmion or a meron depending on the relative strengths of magnetic anisotropy and magnetic fie…