Coherent Transport Through a Quantum Dot Embedded in a Double—Slit—Like Aharonov—Bohm Ring |
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作者姓名: | 黄丽 游建强 等 |
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作者单位: | DepartmentofPhysics,XiangtanUniversity,Xiangtan411105 |
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摘 要: | Coherent transport through a quantum dot embedded in one arm of a double-slit-like Aharononv-Bohm(AB) ring is studied using the green‘s function approach.We obtain experimental obsevations such as continous phase shift along a single resonance peak and sharp inter-resonance phase drop.The AB oscillations of the differential conductance of the whole device are calculated by using the nonequilibrium Keldysh formalism.It is shown that the oscillating conductance has a continuous bias-voltage-dependent phase shift and is asymmetric in both linear and nonlinear response regimes.
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关 键 词: | 量子力学 量子斑点 Aharonov-Bohm环 |
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