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Schematic diagrams of (a) the NEMD simulation system applying the USS scheme and (b) the temperature profile.
(a) Temperature profiles, (b) heat source and sink densities, and (c) time averaged thermal conductivities for various velocity exchange intervals .
Dependence of the calculated thermal conductivity on the velocity exchange interval .
Relation between the heat flux and the temperature gradient. Data are collected from a simulation case with , , and . Error bars denote the standard error of fitting the temperature profile by a least-squares method.
Dependence of the thermal conductivity on the system size. The cross-hatched block represents the uncertainty of the EMD results by Tretiakov and Scandolo (Ref. 25).
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