Quantum Heat Transfer in a Harmonic Chain with a Dephasing Reservoir  

作　　者：明燚 丁星 

机构地区：[1]SchoolofPhysicsandMaterialScience,AnhuiUniversity,Hefei230601

出　　处：《Chinese Physics Letters》2014年第8期4-7,共4页中国物理快报（英文版）

基　　金：Supported by the Anhui-Provincial Natural Science Foundation under Grant No 1208085MA12, and the Student Research Training Program of Anhui University.

摘　　要：The quantum heat transfer in a harmonic chain with a dephasing reservoir is investigated based on the master equation method. The incoming phonons from the thermal reservoir will be scattered back partially into the reservoir at the contact site, leading to the contact resistance. Dephasing in the harmonic chain suppresses the transmitting of scattered phonons into the harmonic chain. Then the heat flux in the chain is reduced by dephasing. However, the heat t^ux is symmetric to interchanging the reservoirs temperatures even with the dephasing. Therefore, the thermal rectification csnnot be realized with pure depha^ing only.The quantum heat transfer in a harmonic chain with a dephasing reservoir is investigated based on the master equation method. The incoming phonons from the thermal reservoir will be scattered back partially into the reservoir at the contact site, leading to the contact resistance. Dephasing in the harmonic chain suppresses the transmitting of scattered phonons into the harmonic chain. Then the heat flux in the chain is reduced by dephasing. However, the heat t^ux is symmetric to interchanging the reservoirs temperatures even with the dephasing. Therefore, the thermal rectification csnnot be realized with pure depha^ing only.

分 类 号：TM422[电气工程—电器] TQ172.622[化学工程—水泥工业]