2011 Fiscal Year Final Research Report
Electron transport in disordered quantum wires with a perfectly conducting channel
| Project/Area Number |
21540389
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Hiroshima University |
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Principal Investigator |
TAKANE Yositake 広島大学, 大学院・先端物質科学研究科, 教授 (40254388)
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| Research Collaborator |
IMURA Ken-ichiro 広島大学, 大学院・先端物質科学研究科, 助教 (90391870)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 完全透過チャネル / アンダーソン局在 / 量子細線 |
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| Research Abstract |
It has been pointed out that electrons in a disordered graphene nanoribbon with zigzag edges are free from Anderson localization due to the presence of a perfectly conducting channel without backward scattering. The purpose of this research is to clarify characteristic features of electron transport in this peculiar system. It is shown that the statistical aspect of the electron transport properties can be understood within the framework of the unitary universality class with channel-number imbalance. It is also shown that a perfectly conducting channel in a disordered graphene nanoribbon is remarkably robust against dephasing.
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