Coulomb-Modified Fano Resonance in a One-Lead Quantum Dot
نویسندگان
چکیده
منابع مشابه
Coulomb interaction in a quantum dot
One approximation is made to describe a M+1 electron many-body wavefunction by a M electron many-body wavefunction and a single electron wavefunction. Under this approximation, we have derived the Coulomb energy which relates the exciton energy Eexc in a quantum dot with the quasiparticle band gap (defined as the difference between the ionization energy and the electron affinity), and the Coulo...
متن کاملCoulomb blockade in a quantum dot coupled strongly to a lead.
We study theoretically a quantum dot in the quantum Hall regime that is strongly coupled to a single lead via a point contact. We find that even when the transmission through the point contact is perfect, important features of the Coulomb blockade persist. In particular, the tunneling into the dot via a second weakly coupled lead is suppressed, and shows features that can be ascribed to elastic...
متن کاملCoulomb blockade in an open quantum dot.
We report the observation of Coulomb blockade in a quantum dot contacted by two quantum point contacts each with a single fully transmitting mode, a system thought to be well described without invoking Coulomb interactions. Below 50 mK we observe a periodic oscillation in the conductance of the dot with gate voltage, corresponding to a residual quantization of charge. From the temperature and m...
متن کاملResonance in an open quantum dot system with a Coulomb interaction: a Bethe-ansatz approach
The purpose of this letter is to observe resonance in an open quantum system with a Coulomb interaction. The system that we study is the two-lead interacting resonant-level model (IRLM), which consists of two leads of non-interacting electrons that interact with an electron on a quantum dot in between the two leads. We obtain N -electron scattering states for arbitrary N , generalizing the Beth...
متن کاملFano stability diagram of a symmetric triple quantum dot
The Fano factor stability diagram of a C3v symmetric triangular quantum dot is analyzed for increasing electron fillings N . At low filling, conventional Poissonian and sub-Poissonian behavior is found. At larger filling, N 2, a breaking of the electron-hole symmetry is manifested in super-Poissonian noise with a peculiar bias voltage dependence of the Fano factor at Coulomb and interference bl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2004
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.93.106803