Experimental data for bulk valley transport and Berry curvature spreading at the edge of flat bands

This dataset was used in our study of bulk valley transport and Berry curvature spreading at the edge of flat bands in twisted double bilayer graphene.本数据集应用于我们针对扭转双双层石墨烯平带边缘处的体谷输运与贝里曲率（Berry curvature）扩散现象所开展的研究。