论文标题
用于固有热传输和磁化电流的统一散装半经典理论
Unified bulk semiclassical theory for intrinsic thermal transport and magnetization currents
论文作者
论文摘要
我们揭示了材料不均匀性在统一固有热和热电运输以及磁化电流的制定中的意外作用。光滑的不均匀性导致依赖于位置的局部带分散和相空间浆果曲率，从而使一般而快速的运输和磁化电流访问，显示动量空间浆果曲率物理。我们的理论不会引起边界电流，磁化的热力学方法或任何机械统计力的对应物。通过引入虚拟的不均匀性，它也适用于均匀样本，促进不均匀性是半经典运输理论的基本技巧。与量子运输理论中虚拟的引力场的窍门相比，这种技巧都起作用，例如运输的驱动力，例如温度梯度。因此，我们包括更通用的机械驱动力，并在所得的传输热电流和电流之间建立Mott的关系，而这两种电流的这种关系才在电场是驱动力时才知道。
We reveal the unexpected role of the material inhomogeneity in unifying the formulation of intrinsic thermal and thermoelectric transport as well as magnetization currents. The smooth inhomogeneity leads to the position dependent local band dispersion and phase-space Berry curvature, enabling a general and rapid access to transport and magnetization currents displaying the momentum-space Berry curvature physics. Our theory does not invoke the boundary current, the thermodynamic approach to magnetization or any mechanical counterpart of statistical forces. By introducing a fictitious inhomogeneity, it applies to homogeneous samples as well, promoting the inhomogeneity to be a basic trick in semiclassical transport theories. Such a trick works regardless of the driving force of transport, e.g., temperature gradient, in contrast to the trick of fictitious gravitational field in quantum transport theories. We thus include more general mechanical driving forces and establish the Mott relation between the resulting transport thermal and electric currents, whereas this relation for these two currents was previously only known when an electric field is the driving force.
