Magnetotransport Through Antidot Lattices:How Does It Depend on Antidot Diameter?
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概要
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Electron transport through square arrays of antidots in a magnetic field is numerically studiedfor various antidot diameters. Using the linear response theory, we find two features: (1) Atthe magnetic field of the main peak in the resistivity, there is an optirnurn antidot diameter atwhich the conductivity is maximized. (2) In the region of weak magnetic field, negative Hallconductivity is observed. The range of the magnetic field in which the conductivity is negativebecomes large when the antidot diameter is increased. Further the origins of the above featuresare clarified in connection witla the classical trajectories of the electron.
- 社団法人日本物理学会の論文
- 1997-10-15
著者
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Nagao Taro
Department Of Physics Faculty Of Science Osaka University
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Nagao Taro
Department Of Physics Graduate Shcool Of Science Osaka University
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