文章基本信息

标题：Orientation Dependent Thermal Conductance in Single-Layer MoS₂
本地全文：下载
作者：Jin-Wu Jiang ; Xiaoying Zhuang ; Timon Rabczuk 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2013
卷号：3
DOI：10.1038/srep02209
出版社：Springer Nature
摘要：We investigate the thermal conductivity in the armchair and zigzag MoS₂ nanoribbons, by combining the non-equilibrium Green's function approach and the first-principles method. A strong orientation dependence is observed in the thermal conductivity. Particularly, the thermal conductivity for the armchair MoS₂ nanoribbon is about 673.6 Wm⁻¹ K⁻¹ in the armchair nanoribbon, and 841.1 Wm⁻¹ K⁻¹ in the zigzag nanoribbon at room temperature. By calculating the Caroli transmission, we disclose the underlying mechanism for this strong orientation dependence to be the fewer phonon transport channels in the armchair MoS₂ nanoribbon in the frequency range of [150, 200] cm⁻¹. Through the scaling of the phonon dispersion, we further illustrate that the thermal conductivity calculated for the MoS₂ nanoribbon is esentially in consistent with the superior thermal conductivity found for graphene.