论文标题
节点线半学的热电响应：费米表面拓扑的探针
Thermoelectric response of nodal-line semimetals: probe of the Fermi surface topology
论文作者
论文摘要
我们研究了半经典玻尔兹曼形式主义中三维结节线半学的低温热电特性。考虑到电子与散射剂之间的短距离相互作用，我们计算各向异性松弛时间，然后在径向和轴向方向上获得电荷电导率和热电器，相对于Nodal-Line平面。增加了载体浓度，这是费米表面形状的拓扑跃迁，从圆环到椭圆形信号，作为热电器的急剧变化。对于观察热电特性中费米表面的拓扑跃迁是必要的，对弛豫时间的能量和方向依赖性的适当处理是必要的。
We investigate the low-temperature thermoelectric properties of three-dimensional nodal-line semimetals within the semiclassical Boltzmann formalism. Considering short-range interaction between electrons and scattering agents, we calculate the anisotropic relaxation times and then obtain the charge conductivity and thermopower along the radial and the axial directions with respect to the nodal-line plane. Increasing the carrier concentration, a topological transition in the shape of the Fermi surface from a torus into an ellipsoid signal as a sharp change in the thermopower. An adequate treatment of the energy and direction dependence of the relaxation time is necessary for the observation of the topological transition of the Fermi surface in the thermoelectric properties.
