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Classical Heat Transport in Anharmonic Molecular Junctions: Exact Solutions
Sha Liu, Bjiay Kumar Agarwalla, Jian-Sheng Wang +1
We study full counting statistics for classical heat transport through anharmonic/nonlinear molecular junctions formed by interacting oscillators. Analytical result of the steady s…
Topological Magnon Insulator in Insulating Ferromagnet
Lifa Zhang, Jie Ren, Jian-Sheng Wang +1
In the ferromagnetic insulator with Dzyaloshinskii-Moriya interaction, we theoretically predict and numerically verify a topological magnon insulator, where the charge-free magnon…
Cumulants of heat transfer across nonlinear quantum systems
Huanan Li, Bijay Kumar Agarwalla, Baowen Li +1
We consider thermal conduction across a general nonlinear phononic junction. Based on two-time observation protocol and the field theoretical/algebraic method, the cumulants of the…
Cumulant generating function formula of heat transfer in ballistic system with lead-lead coupling
Huanan Li, Bijay Kumar Agarwalla, Jian-Sheng Wang
Based on two-time observation protocol, we consider heat transfer in a given time interval in lead-junction-lead system taking coupling between the leads into account. In v…
A generalized Caroli formula for transmission coefficient with lead-lead coupling
Huanan Li, Bijay Kumar Agarwalla, Jian-Sheng Wang
We present a generalized transmission coefficient formula for the lead-junction-lead system, in which interaction between the leads has been taken into account. Based on it the Car…
Dimensional crossover of thermal conductance in graphene nanoribbons: A first-principles approach
Jian Wang, Xiao-Ming Wang, Yun-Fei Chen +1
First-principles density-functional calculations are performed to investigate the thermal transport properties in graphene nanoribbons (GNRs). The dimensional crossover of thermal…
Tuning thermal transport in nanotubes with topological defects
Jian Wang, Liang Li, Jian-Sheng Wang
Using the atomistic nonequilibrium Green's function, we find that thermal conductance of carbon nanotubes with presence of topological lattice imperfects is remarkably reduced, due…
Generalized Gibbs state with modified Redfield solution: Exact agreement up to second order
Juzar Thingna, Jian-Sheng Wang, Peter Hänggi
A novel scheme for the steady state solution of the standard Redfield quantum master equation is developed which yields agreement with the exact result for the corresponding reduce…
Steady state thermal transport in anharmonic systems: Application to molecular junctions
Juzar Thingna, J. L. García-Palacios, Jian-Sheng Wang
We develop a general theory for thermal transport in anharmonic systems under the weak system-bath coupling approximation similar to the quantum master equation formalism. A curren…