非线性霍尔效应示意图 (IMAGE) Science China Press Caption 在小角度转角WSe2超晶格中,非零的应力使得体系具有非零的贝里曲率偶极子(D)。当在源极(source)和漏极(drain)之间输入一个交流电压信号E时,这一非零的D导致二倍频霍尔信号j2 的产生。 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.