Wu Xiaosong's research group and collaborators in the School of Physics discovered heterodimensional superlattice structures and intra-plane anomalous Hall effects

American physicist Edwin Hall discovered the normal Hall effect in 1879 and the anomalous Hall effect in ferromagnetic metals two years later

In the normal Hall effect, the applied external electric field E is in the sample measurement plane, while the magnetic field B is perpendicular to the sample plane, and the resulting Hall current JH is in the sample plane, and the direction and electric field are perpendicular; The relationship between the two and two of these three vectors is derived from the Lorentz force F=ev×B

Recently, Wu Xiaosong, researchers from the Institute of Condensed Matter Physics and Materials Physics, state key laboratory of artificial microstructure and mesoscopic physics, and center for nanoelectronic frontier science, peking university school of physics, collaborated with Professor Zhou Jiadong and Yao Yugui of the School of Physics of Beijing Institute of Technology, Professor Kazu Suenaga of Osaka University in Japan, and Professor Liu Zheng of Nanyang Technological University in Singapore to synthesize a sulfur vanadium compound (molecular formula V5S8), and systematically studied its structure and electric transmission properties

Fig.

The novel intra-surface Hall effect discovered by the experiment stems from a special form of spin orbit coupling

Figure 2 Transport measurement of VS2-VS superlattice and in-plane anomalous Hall effect: a.

On August 31, 2022, the relevant research work was published online in Nature under the title of "Heterodimensional superlattice with in-plane anomalous Hall effect"; Professor Zhou Jiadong of Beijing Institute of Technology, Zhang Wenjie, a 2020 Ph.

The above research work has been supported