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Semiclassical Ballistic Transport through a Circular Microstructure in Weak Magnetic Fields |
| ZHANG Yan-Hui1**, CAI Xiang-Ji1, LI Zong-Liang1, JIANG Guo-Hui1, YANG Qin-Nan1, XU Xue-You 2 |
1College of Physics and Electronics, Shandong Normal University, Jinan 250014
2Information Research Institute, Shandong Academy of Sciences, Jinan 250014
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| Cite this article: |
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ZHANG Yan-Hui, CAI Xiang-Ji, LI Zong-Liang et al 2013 Chin. Phys. Lett. 30 040501 |
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Abstract We study magneto-transport through a weakly open circular microstructure in the perpendicular weak magnetic fields by a semiclassical approximation within the framework of the Fraunhofer diffraction effect at the lead openings. It is found that the peak positions of the transmission power spectrum can be related to simple trajectories according to classical dynamics. Moreover, we formulate the fluctuations in the transmission amplitude as functions of both the wave number k and the magnetic field B in terms of different classical trajectories, and the Aharonov–Bohm phase of the directed areas enclosed by these trajectories that reflect the quantum interference effect.
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Received: 08 November 2012
Published: 28 April 2013
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| PACS: |
05.45.Mt
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(Quantum chaos; semiclassical methods)
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73.23.Ad
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(Ballistic transport)
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03.65.Sq
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(Semiclassical theories and applications)
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