论文标题
金属中轨道磁化的热电产生
Thermoelectric Generation of Orbital Magnetization in Metals
论文作者
论文摘要
我们提出了一种轨道磁化效应，其中，温度梯度为Bloch电子产生轨道磁化（OM），并且我们提出了电和热诱导的OM的统一理论，对金属和绝缘子有效。我们揭示了OM的固有响应，为此，敏感性完全取决于频带几何数量，例如带浆间浆果连接，带轨道轨道矩和量子公制。该理论可以很容易地与第一原理计算相结合，以研究实际材料。例如，我们计算Cri $ _ {3} $ BiLayers中的OM响应，其中固有的贡献主导着。讨论了内在响应的温度缩放，声子阻力的效果以及对OM的角度动量的贡献。
We propose an orbital magnetothermal effect wherein a temperature gradient generates an orbital magnetization (OM) for Bloch electrons, and we present a unified theory for electrically and thermally induced OM, valid for both metals and insulators. We reveal that there exists an intrinsic response of OM, for which the susceptibilities are completely determined by the band geometric quantities such as interband Berry connections, interband orbital moments, and the quantum metric. The theory can be readily combined with first-principles calculations to study real materials. As an example, we calculate the OM response in CrI$_{3}$ bilayers, where the intrinsic contribution dominates. The temperature scaling of intrinsic and extrinsic responses, the effect of phonon drag, and the phonon angular momentum contribution to OM are discussed.
