Browsing by Author "Schulz, P. A."

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Publication
    Óptica de nanopartículas y nanocompuestos
    (2001) Alfonso, J. E.; Rodríguez, O.; García, Cobacy; Sánchez, P.; Otálora, J. C.; Carelli, J. L.; Ávila, H. A.; Merchán, E.; Osorio, J.; Cristancho Mejía, Luis Fernando; Carrillo, C.; Daza, C.; Múnera, H.; Herrera, W.; Niño, Virgilio; Santos Palermo, Carlos Alberto; Valencia Hernández, Felipe; Machado Charry, Fabio Eduardo; Ríos Montañez, Gloria Inés; Albarracín Balaguera, Raúl Humberto; Gutiérrez Rodríguez, Adriana; Fonseca Romero, K. M.; Aguilar Pinto, A. C.; Peixoto de Faria, J.G.; Nemes, M. C.; Thomaz, M. T.; Zanatta, A. R.; Fajardo, Luis F.; Mulato, M.; Lima, Jr. M. M.; Marques, M. C.; Chambouleyron, I.; Campos, A. M.; Peña, C.; Torres S., J.; Rey González, R. R.; Cortez Torres, Jaime Hernán; Valencia, F.; Ortiz, H.; Schulz, P. A.; López Carreño, Luis Demetrio; Benítez, G.; Viscido, L.; Heras, J. M.; Ojeda Silva, J.; Parra Vargas, C.; Barón González, A. J.; Salcedo Reyes, Juan Carlos
  • No Thumbnail Available
    Publication
    Reversible electron pumping and negative differential resistance in two-step barrier diode under strong terahertz ac field
    (2011-03) Murillo, G.; Schulz, P. A.; Arce Clavijo, Julio César
    A computational study, employing a Floquet-transfer-matrix approach, of the current in a model two-step barrier diode under intense ac fields in the terahertz range is reported. It is demonstrated that the field pumps a net tunnel current through the structure, which can exhibit a negative differential resistance and whose direction can be controlled by the ac-bias amplitude. These behaviors are seen to originate from the inelastic scattering of incoming electrons by absorption or emission of field quanta from a shape resonance present in the field-free structure.