Symmetry of Magnetoconductance in Two-Terminal Elements
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概要
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The symmetry relation of magnetoconductance (MC) with respect to magnetic fieldreversal plays an essential role in the quantum transport phenomena in microstruc-lures. The symmetry of a ring with leads under the measuring condition of a two-terminal element is studied by two methods: (i) Landauer formula and (ii) the method oflocal electric field fluctuation, which adequately explains the asymmetry of MC inmicrostructures. We find that the Landauer formula is not applicable to the symmetryproperties of MC in two terrninal elements, whereas our metltod leads to symmetricconductance, i.e. G(H)=G( -H) . The origin of the difference in the two formulae isdiscussed.
- 社団法人日本物理学会の論文
- 1988-12-15
著者
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Isawa Yoshimasa
Research Institute Of Electorical Communication Tohoku University
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ISAWA Yoshimasa
Department of Physical Electronics, Faculty of Engineering Hiroshima University
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