双圆偏振光驱动的旋磁电流概念图。 (IMAGE) Science China Press Caption 双圆光驱动从节线半金属到外尔半金属相变的色散关系示意图。通过改变双圆光偏振态,可以动态控制对手性外尔节点的能量和动量分离。三叶双圆偏振光照射下产生旋磁电流的实验示意图,这种双圆偏振光是两个不同频率的相反手性圆偏振光的叠加,标记为ω和2ω。 Credit ©《中国科学》杂志社 Usage Restrictions Use with credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.