Atomically switchable giant spontaneous Hall effect in iridate/scandate superlattices
Abstract
The competition between incompatible oxygen octahedral tilting modes across heterointerfaces offers a powerful, yet underexplored, avenue to discover emergent phenomena. Here, we report an atomically switchable giant spontaneous Hall effect (SHE) in nTbScO3/10SrIrO3 superlattices. By controlling the TbScO3 spacer thickness with a single-unit-cell precision, we observed an abrupt increase of SHE at n = 1, above which SHE is significantly suppressed to a Berry curvature dominated level. Synchrotron x-ray diffraction and scanning transmission electron microscopy reveal that this switching behavior arises from a nontrivial modulation of octahedral tilting in the superlattice unit, leading to an incipient modulation in magnetic structure.
Article Details
Journal Info
Journal of Applied Physics
American Institute of Physics
Authors (14)
Haiyang Zhang
School of Nano-Tech and Nano-Bionics
Yuanxi Liang
Institutes of Physical Science and Information Technology, Anhui University 1 , Hefei 230601,
Xiangnan Xie
College of Science, National University of Defense Technology 4 , Changsha 410073,
Deyang Li
Enyang Men
Jingxin Chen
Zhihan Qiao
Hangtian Wang
Anhui Provincial Key Laboratory of Low-Energy Quantum Materials and Devices, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences 1 , Hefei, Anhui 230031,
Junlei Jiang
Anhui Provincial Key Laboratory of Low-Energy Quantum Materials and Devices, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences 1 , Hefei, Anhui 230031,
Han Zhang
Yizhou Liu
Mingliang Tian
Dongsheng Song
Lin Hao