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(a) Schematic of an asymmetric graphene-based three-terminal junction. The left, right, and central terminal are denoted by NL , NR , and NC , corresponding to the temperature TL , TR , and TC , respectively. (b) and (c) The heat flux direction for Δ > 0 and Δ < 0, respectively.
(a) vs for different . The inset in (a) shows vs . (b) The phonon transmission coefficient between every two terminals. (c) and (d) The schematic diagrams which explain the dependence of on for and , respectively. Here, , and .
() vs for different . The inset shows the thermal rectifying efficiency as a function of . Here, , and .
as a function of () for different . The inset shows as a function of . Here, other parameters are K, .
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