Quantum Interference Effects on the Electronic Transmission Through Quantum Dot Molecules

R. H. ROMERO; D. A. LOVEY; D. S. ACOSTA CODEN; S. S. GOMEZ

Quantum Dot Molecules

Springer

Lugar: Berlin; Año: 2013; p. 259 - 280

The fabrication and control of devices at nanometric scale emphasizes the importance of quantum effects 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 effects play an important role. In this Chapter the noticeable Fano and Aharonov-Bohm effects 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 channels. The effects manifest themselves as peaks of high conductance and dips of cancellations of transmission along the ring.