72 citations · 185 across the 9 of their papers we have counts for
7 papers · 1 filter
Off-resonant light-induced topological phase transition and thermoelectric transport in semi-Dirac materials
Vassilios Vargiamidis, P. Vasilopoulos, Neophytos Neophytou
We show that a semi-Dirac (SD) system with an inversion symmetry breaking mass exhibits a topological phase transition when irradiated with off-resonant light. Using Floquet theory…
Tunable topological phases in monolayer PtHgSe with exchange fields
Vassilios Vargiamidis, P. Vasilopoulos, Neophytos Neophytou
We investigate topological phases of monolayer jacutingaite (PtHgSe) that arise when considering the competing effects of spin-orbit coupling (SOC), magnetic exchange inter…
Berry curvature, orbital magnetization, and Nernst effect in biased bilayer WSe
Vassilios Vargiamidis, P. Vasilopoulos, M. Tahir +1
A valley-contrasting Berry curvature in bilayer transition metal dichalcogenides with spin-orbit coupling can generate valley magnetization when the inversion symmetry is broken, f…
Theoretical model for the Seebeck coefficient in superlattice materials with energy relaxation
Vassilios Vargiamidis, Mischa Thesberg, Neophytos Neophytou
We present an analytical model for the Seebeck coefficient S of superlattice materials that explicitly takes into account the energy relaxation due to electron-optical phonon (e-ph…
Hierarchical nanostructuring approaches for thermoelectric materials with high power factors
Vassilios Vargiamidis, Neophytos Neophytou
The thermoelectric power factor of hierarchically nanostructured materials is investigated using the nonequilibrium Greens function method for quantum transport, including interact…
Thermoelectric power factor in nanostructured materials with randomized nanoinclusions
Vassilios Vargiamidis, Samuel Foster, Neophytos Neophytou
We investigate the electric and thermoelectric transport coefficients of nanocomposites using the Non-Equilibrium Greens Function (NEGF) method, which can accurately capture the de…
Spin- and valley-dependent transport through arrays of ferromagnetic silicene junctions
N. Missault, P. Vasilopoulos, V. Vargiamidis +2
We study ballistic transport of Dirac fermions in silicene through arrays of barriers, of width , in the presence of an exchange field and a tunable potential of height …