▎ 摘　　要

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.