论文标题
电气可调式效应，作为对无序Weyl半法的手性异常的直接测量
Electrically tunable Kondo effect as a direct measurement of the chiral anomaly in disorder Weyl semimetals
论文作者
论文摘要
我们提出了一种通过近核效应直接测量疾病韦伊尔半法（WSM）的手性异常的机制。我们发现，在磁场驱动的WSM中，可以通过手性化学电位调节近野峰的位置，这与$ \ m athbf {e} \ cdot \ cdot \ mathbf {b} $成正比。近野峰来自杂质内的自旋波动，除了温度以外，它们与宿主的费米水平紧密相关。在WSMS中，手性 - 反式诱导的手性群体失衡将使配对的Weyl谷的局部费米水平转移到能量相反的方向上，然后影响近托效应。因此，外部电场可以通过手性化学电位来调整近藤效应。这是手性异常的独特之处。基于这一点，我们认为电气可调节的围绕效应可以作为WSM中手性异常的直接测量。近多峰对疾病效应具有鲁棒性，因此，手性异常的信号在相对较弱的磁场中生存。
We propose a mechanism to directly measure the chiral anomaly in disorder Weyl semimetals (WSMs) by the Kondo effect. We find that in a magnetic and electric field driven WSM, the locations of the Kondo peaks can be modulated by the chiral chemical potential, which is proportional to $\mathbf{E}\cdot \mathbf{B}$. The Kondo peaks come from spin fluctuations within the impurities, which apart from the temperature, relate closely to the host's Fermi level. In WSMs, the chiral-anomaly-induced chirality population imbalance will shift the local Fermi levels of the paired Weyl valleys toward opposite directions in energy, and then affects the Kondo effect. Consequently, the Kondo effect can be tunable by an external electric field via the chiral chemical potential. This is unique to the chiral anomaly. Base on this, we argue that the electrically tunable Kondo effect can serve as a direct measurement of the chiral anomaly in WSMs. The Kondo peaks are robust against the disorder effect and therefore, the signal of the chiral anomaly survives for a relatively weak magnetic field.
