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- W2064753666 abstract "We study the phase behavior of the oscillating conductance for a modified Aharonov-Bohm (AB) ring threaded by a magnetic flux, with a quantum dot embedded in each arm, respectively (dot-1 for studying and dot-0 for reference). Using Keldysh's nonequilibrium-Green-function the expressions for the current j and the transmission probability T(ϵ) are derived. For the AB ring with one dot, we show that the phase behavior of the AB oscillating is in agreement with the observation qualitatively. In particular, we can obtain an abrupt phase drop by π near the centre of the two succesive resonance peaks, thus explain that the corresponding points of the succesive peaks are in phase. For the AB ring with two dots, we find that the symmetrical positions of a peak are in phase; no phase change happens as passing a single resonance peak but an abrupt phase change by π occurs around some-where between the peak and the valley. These phase characters can be explained in terms of the transmission probability." @default.
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- W2064753666 date "1998-04-01" @default.
- W2064753666 modified "2023-09-24" @default.
- W2064753666 title "Transmission through an Aharonov-Bohm ring with two quantum dots" @default.
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- W2064753666 doi "https://doi.org/10.1016/s0038-1098(97)10213-7" @default.
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