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- W2953037655 abstract "Very recently, it was demonstrated explicitly that a zigzag graphene nanoribbon (GNR) exhibits a conductance of G0/2 (G0 = 2e2/h is the quantum of conductance) even at room-temperature along distances as large as 16 micron [Baringhaus, et al. Nature 506, 349 (2014)]. Such a result is puzzling as none of previous theories seem to match the experimental observations. Here, we propose a model to explain the robust single-channel ballistic transport properties in zigzag GNR. The sp3 distortion of carbon atoms at the GNR edges induces a large spin-orbit coupling on the edges atoms, which enhances spin-flip scattering of edge states of the zigzag GNR. With sufficient spin-flip scattering, the wave-function of edge states becomes a superposition of the spin-up and spin-down components. Then the coupling of the two edges becomes important. This removes the edge degree of freedom and results in the robust conductance of G0/2 in the zigzag GNR." @default.
- W2953037655 created "2019-06-27" @default.
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- W2953037655 date "2014-08-02" @default.
- W2953037655 modified "2023-09-27" @default.
- W2953037655 title "Origin of Room-temperature Single-channel Ballistic Transport in Zigzag Graphene Nanoribbons" @default.
- W2953037655 hasPublicationYear "2014" @default.
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