Defect-induced circulating thermal current in graphene with nanosized width

DOI Web Site Web Site 被引用文献5件

書誌事項

公開日
2008-01-22
権利情報
  • http://link.aps.org/licenses/aps-default-license
DOI
  • 10.1103/physrevb.77.033412
公開者
American Physical Society (APS)

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説明

A unique thermal transport mechanism has been predicted in graphene nanoribbons with Stone-Wales defects via two complementary approaches: the nonequilibrium Green's function method and the phonon-wave packet scattering method. In the low-energy region, the thermal current is carried by phonons with wavelength longer than the defect size, which flows ballistically along the edges of the ribbons. In contrast, high-energy phonons, with short wavelengths, are strongly scattered. The phonon transmission is reduced to zero for a specific phonon energy and a noticeable circulating thermal current is observed in the heptagonal rings of the Stone-Wales defect around the zero-transmission point.

収録刊行物

  • Physical Review B

    Physical Review B 77 (3), 033412-, 2008-01-22

    American Physical Society (APS)

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