Effects of Confining Geometry on Ballistic Transport in Quantum Wires
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概要
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The effects of confining geometry are investigated on ballistic transport in quasi-one-dimensional quantum wires, The coupled channel type method is used in order tocalculate the conductance of the quantum wires as a function of the Fermi energy. Itis shown that oscillations existing in the conductance of the wire with a confiningpotential of 'step wise' type geometry disappear as the variation of the confininggeometry becomes smooth. In the wire with an extended part irrespective of itsgeometry, step wise or smooth, the conductance shows dip structures. In the wirewith double constrictions, there appear oscillations in the conductance, which can beconsidered to reflect the existence of resonance and bound states between these twoconstrictions. The effects of the external magnetic field on ballistic transport arestudied in the above-mentioned wires as well.[ballistic transport, quantum wire, confining geometry, conductance oscillation, l] coupled channel calculationll1
- 社団法人日本物理学会の論文
- 1991-05-15
著者
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KASAI Hideaki
Department of Precision Science and Technology and Applied Physics, Osaka University
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Okiji Ayao
Department Of Applied Physics Osaka University
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MITSUTAKE Kunihiro
Department of Applied Physics,Osaka University
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Mitsutake Kunihiro
Department Of Applied Physics Osaka University:ulsi Research Center Toshiba Corporation
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Okiji Ayao
Department Of Aplied Physics Faculty Of Engineering Osaka University
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Kasai Hideaki
Department Of Applied Physics Faculty Of Engineering Osaka University
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