IMIT 21220
INSTITUTO DE MODELADO E INNOVACION TECNOLOGICA
Unidad Ejecutora - UE
artículos
Título:
Quantum Interference Effects on the Electronic Transmission Trough Quantum Dot Molecules
Autor/es:
D. A. LOVEY; R. H. ROMERO; D. S. ACOSTA CODEN; S. S. GOMEZ
Revista:
Lecture Notes in Nanoscale Science and Technology
Editorial:
Springer-Verlag
Referencias:
Lugar: Berlin; Año: 2012
ISSN:
2195-2159
Resumen:
The fabrication and control of devices at nanometric scale emphasizes the importance of quantum e ffects on the electronic motion in semiconductor heterostructures. The size of the systems the electrons have to move through, makes mandatory to take into account consider the wave-like character of the electrons. As a consequence, the typical interference e ects play an important role. In this Chapter the noticeable Fano and Aharonov-Bohm e ects in the transmission through a ring of quantum dots threaded by a magnetic flux will be discussed. They arise from the interference of the electron wave function when propagating along several transmission paths. The e ects manifest themselves as peaks of high conductance and dips of cancellations of transmission along the ring. The control of the gate potentials applied to quantum dots and the magnetic eld threading the ring, allows one to tune the energies at which high and low of transmission occur.
