24 papers
Contrasting anisotropic electron-phonon-spin coupling in FeGeTe and FeGeTe: A helicity-resolved Raman study
Smrutiranjan Mekap, Jyoti Saini, Andrzej Ptok +4
Two-dimensional van der Waals ferromagnets FeGeTe (F3GT) and FeGeTe (F5GT) exhibit pronounced magneto-optical responses, which open promising platforms for investi…
Kagome edge states under lattice termination, spin-orbit coupling, and magnetic order
Sajid Sekh, Annica M. Black-Schaffer, Andrzej Ptok
We study the edge state properties of a two-dimensional kagome lattice using a tight-binding approach, focusing on the role of lattice termination, spin-orbit coupling, and magneti…
Anisotropic electron-phonon coupling and chiral phonons in van der Waals room temperature ferromagnet FeGeTe
Smrutiranjan Mekap, Andrzej Ptok, Jyoti Saini +3
The layered van der Waals FeGeTe (F5GT) compound exhibits room-temperature ferromagnetism, making it a promising candidate for technological applications. In our study, com…
Theoretical investigation of the photovoltaic properties of MgSnN for multi-junction solar cells
Issam Mahraj, Mossab Oublal, Andrzej Ptok
The orthorhombic crystal structure of the MgSnN compound with Pna2 symmetry has been investigated as a low-cost, non-toxic material for photovoltaic (PV) applications using…
Chiral phononic and electronic edge modes of EuPtSi
Issam Mahraj, Andrzej Ptok
Systems with P23 symmetry are characterized by the realization of chiral edge modes, propagating in one direction along closed loops around some high symmetry points of the B…
Tuning of anomalous magnetotransport properties in half-Heusler topological semimetal GdPtBi
Orest Pavlosiuk, Piotr WiÅniewski, Romain Grasset +3
Half-Heusler compounds from the PtBi family exemplify Weyl semimetals in which external magnetic field induce Weyl nodes. These materials exceptionally host topologically non-t…