126 citations · 214 across the 4 of their papers we have counts for
4 papers
Quantum Confinement in Nonadditive Space with a Spatially Dependent Effective Mass for Si and Ge Quantum Wells
E. G. Barbagiovanni, R. N. Costa Filho
We calculate the effect of a spatially dependent effective mass (SPDEM) [adapted from R. N. Costa Filho et al. Phys. Rev. A., \textbf{84} 050102 (2011)] on an electron and hole con…
Displacement operator for quantum systems with position-dependent mass
R. N. Costa Filho, M. P. Almeida, G. A. Farias +1
A translation operator is introduced to describe the quantum dynamics of a position-dependent mass particle in a null or constant potential. From this operator, we obtain a general…
Microscopic Theory of Damon-Eshbach Modes in Ferromagnetic Films
R. V. Leite, R. N. Costa Filho
The surface spin wave branches in ferromagnetic films are studied using a microscopic theory which considers both magnetic dipole-dipole and Heisenberg exchange interactions. The d…
Microscopic Theory of Dipole-Exchange Spin Waves in Ferromagnetic Films: Linear and Nonlinear Processes
R. N. Costa Filho, M. G. Cottam, G. A. Farias
The linear and nonlinear processes in ferromagnetic films at low temperatures T<< Tc are studied in a microscopic theory. Both the long-range magnetic dipole-dipole and the Heisenb…