2 6 Ja n 20 04 Kondo effect in quantum dots
نویسنده
چکیده
We review mechanisms of low-temperature electronic transport through a quantum dot weakly coupled to two conducting leads. Transport in this case is dominated by electron-electron interaction. At temperatures moderately lower than the charging energy of the dot, the linear conductance is suppressed by the Coulomb blockade. Upon further lowering of the temperature, however, the conductance may start to increase again due to the Kondo effect. We concentrate on lateral quantum dot systems and discuss the conductance in a broad temperature range, which includes the Kondo regime. PACS numbers: 72.15.Qm 73.23.-b 73.23.Hk 73.63.Kv
منابع مشابه
Kondo Effect in Coupled Quantum Dots
We discuss Kondo systems in coupled-quantum-dots, with emphasis on the semiconductor quantum dot system. The rich variety of behaviors, such as distinct quantum phases, non-fermi liquid behavior, and associated quantum phase transitions and cross-over behaviors are reviewed. Experimental evidence for such novel characteristics is summarized. The observed behaviors may provide clues as to the re...
متن کاملua nt - p h / 04 01 15 9 v 1 2 6 Ja n 20 04 ’ Superluminal ’ tunnelling as a quantum measurement effect
We exploit the analogy between tunnelling across a potential barrier and Aharonov's weak measurements to resolve the long standing paradox between the impossibility to exceed the speed of light and the seemingly 'superlumi-nal' behaviur of the tunnelling particle in the barrier. We demonstrate that 'superluminality' occurs when the value of the duration τ spent in the barrier is uncertain, wher...
متن کامل/ 04 10 03 6 v 4 2 1 Ja n 20 05 Informal Resource Letter – Nonlinear quantum mechanics on arXiv up to August 2004
I compiled a list of articles on arXiv that deal with possible fundamental quantum nonlinearities or examine the origins of its linearity. The list extends til August 2004.
متن کاملFriedel Oscillations of Kondo Impurities: a Comparison
Recently Affleck et al. derived the existence of Friedel oscillations in the presence of a Kondo impurity. They supported their analytic derivation by numerical calculations using Wilson’s renormalization approach (NRG). In this paper the size of the Friedel oscillations is calculated with the FAIR method (Friedel Artificially Inserted Resonance) which has been recently developed. The results o...
متن کاملDynamical symmetries and quantum transport through nanostructures
We discuss the manifestation of dynamical symmetries in quantum transport through nanostructures. The dynamical symmetry SO(4) manifested in the singlet-triplet excitations is shown to be responsible for several exotic effects in nano-devices: non-equilibrium Kondo effect in T-shape Double Quantum Dots, phonon-induced Kondo effect in transition-metal-organic complexes, Kondo shuttling in Nano-E...
متن کامل