Submitted for the MAR08 Meeting of The American Physical Society Fano-Kondo effect in a two-level system with triple quantum dots TETSUFUMI TANAMOTO, YOSHIFUMI NISHI, SHINOBU FUJITA, Advanced LSI Technology Laboratory, Toshiba Corporation — Quantum dot (QD) systems have been providing opportunities to probe a wide variety of many-body effects in microelectronic structures. Recently, the Fano ef...

Kondo physics e.g., a localized spin interacting with a conduction electron sea in which it is embedded has been a central theme in condensed matter physics for seven decades. The issue of the physics of many localized spins, perhaps on a lattice, interacting with each other as well as with the conduction electrons arose in connection with metallic spin glasses and heavy electron metals. It is ...

Although the Kondo effect and the Kondo ground state of a magnetic impurity have been investigated for more than forty years it was until recently difficult if not impossible to calculate spatial properties of the ground state. In particular the calculation of the spatial distribution of the so-called Kondo cloud or even its existence have been elusive. In recent years a new method has been int...

We theoretically investigate the transport properties of a molecule embedded in one arm of a mesoscopic Aharonov-Bohm interferometer. Due to the presence of phonons the molecule level position d and the electron-electron interaction U undergo a polaronic shift, which affects dramatically the electronic transport through the molecular junction. When the electron-phonon interaction is weak the li...

In a tunneling experiment across a quantum dot it is possible to change the coupling between the dot and the contacts at will, by properly tuning the transparency of the barriers and the temperature. Gate voltages allow for changes of the relative position of the dot addition energies and the Fermi level of the leads. Here we discuss the two limiting cases: weak and strong coupling in the tunne...