Disentangling electronic and phononic thermal transport across two-dimensional interfaces

被引:0
|
作者
Zhai, Linxin [1 ]
Xu, Zhiping [1 ]
机构
[1] Tsinghua Univ, Dept Engn Mech, Appl Mech Lab, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
electrical and thermal transport; 2D interfaces; Wiedemann-Franz law; theoretical proposal; 72.80.Vp; 05.60.Gg; 65.80.Ck; 68.90.+g; WIEDEMANN-FRANZ LAW; GRAPHENE; TRANSISTORS;
D O I
10.1088/1674-1056/ad9ffd
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Electrical and thermal transport at two-dimensional (2D) interfaces is critical for semiconductor technology, yet their interplay remains unclear. We report a theoretical proposal to separate electronic and phononic contributions to thermal conductance at 2D interfaces with graphene, which is validated by non-equilibrium Green's function calculations and molecular dynamics simulations for graphene-gold contacts. Our results reveal that while metal-graphene interfaces are transparent for both electrons and phonons, non-covalent graphene interfaces block electronic tunneling beyond two layers but not phonon transport. This suggests that the Wiedemann-Franz law can be experimentally tested by measuring transport across interfaces with varying graphene layers.
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页数:6
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