Resolution:
standard / ## Figure 1.
(a) Model for an Aharonov-Bohm (AB) ring with an embedded quantum dot. A quantum dot with an energy level ε_{0 }is connected to two external leads by tunnel couplings, Vand _{L }V. Another arm of the AB ring (reference arm) and external leads are represented by
a one-dimensional tight-binding model. The reference arm includes a tunnel barrier
with transfer integral _{R}W. The magnetic flux Φ penetrating the ring is considered as an AB phase ϕ = 2πΦ/Φ_{0 }with flux quantum Φ_{0 }= h/e. (b) The density of states in the lead for the reduced model, ν(ε) in Eq. (6). _{k}ν(ε) oscillates with the period of _{k}ε_{T}, the Thouless energy for the ballistic systems. Its amplitude and phase depend on
the AB phase ϕ.
Yoshii and Eto |