Pengliang Leng, Nesta Benno Joseph, Xiangyu Cao, Yingcai Qian, Zihan Li, Qiang Ma, Linfeng Ai, Ayan Banerjee, Yuda Zhang, Zehao Jia, Yong Zhang, Chuanying Xi, Li Pi, Awadhesh Narayan, Jinglei Zhang, Faxian Xiu
We report a study of thickness-dependent interband and intraband magnetic breakdown by thermoelectric quantum oscillations in ZrSiSe nanoplates. Under high magnetic fields of up to 30 T, quantum oscillations arising from degenerated hole pockets were observed in thick ZrSiSe nanoplates. However, when decreasing the thickness, plentiful multifrequency quantum oscillations originating from hole and electron pockets are captured. These multiple frequencies can be explained by the emergent interband magnetic breakdown enclosing individual hole and electron pockets and intraband magnetic breakdown within spin-orbit coupling (SOC) induced saddle-shaped electron pockets, resulting in the enhanced contribution to thermal transport in thin ZrSiSe nanoplates...
April 19, 2024: Nano Letters