Collective Diffusion and Strange-Metal Transport  

作　　者：Lin-Peng Du Shao-Feng Wu Guo-Hong Yang 杜林鹏;吴绍锋;杨国宏

机构地区：[1]Department of Physics,Shanghai University,Shanghai 200444,China [2]Shanghai Key Lab for Astrophysics,Shanghai 200234,China

出　　处：《Communications in Theoretical Physics》2018年第12期705-712,共8页理论物理通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant No.11675097

摘　　要：We study a particular combination of charge and heat currents, which is decoupled with the heat current.The "heat-decoupled"(HD) current can be transported by diffusion at long distances, when the thermoelectric effect is small, large, or balanced. Using holographic models with momentum relaxation, we illustrate that the different thermoelectric effects correspond to the high temperatures and strong disorder, low temperatures, or special critical index. Meanwhile, the Einstein-like relation and the diffusion/chaos relation may be emergent. Assuming that the existence and features of HD modes appear in strange metals, we can predict that when the thermoelectric effect is not very large, the scaling of resistivity is predominantly controlled by the HD susceptibility and chaos; otherwise more physics is required.

关 键 词：gauge/gravity DUALITY STRANGE metal THERMOELECTRIC TRANSPORT 

分 类 号：O4[理学—物理]