Manipulation of vortex array via a magnetism-tunable spin-polarized scanning tunnelling microscopy
Bing Xia(夏冰)1, Hong-Yuan Chen(陈虹源)1, Jian Zheng(郑健)1, Bo Yang(杨波)1, Jie Cai(蔡杰)1, Yi Zhang(章毅)1, Yi Yang(杨毅)1, Hao Yang(杨浩)1, Dan-Dan Guan(管丹丹)1, Xiao-Xue Liu(刘晓雪)1, Liang Liu(刘亮)1, Yao-Yi Li(李耀义)1, Shi-Yong Wang(王世勇)1, Can-Hua Liu(刘灿华)1, Hao Zheng(郑浩)1, and Jin-Feng Jia(贾金锋)1,2,3,†
1 TD Lee Institute, Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China; 2 Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China; 3 Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong), Shenzhen 518045, China
Abstract Manipulating and braiding Majorana zero modes (MZM) are a critical step toward realizing topological quantum computing. The primary challenge is controlling the vortex, which hosts the MZM, within a superconducting film in a spatially precise manner. To address this, we developed a magnetic force-based vortex control technology using the STM system with a self-designed four-electrode piezo-scanner tube and investigated vortex manipulation on the NbSe superconducting film. We employed ferromagnetic tips to control the movement of vortex array induced by the tip's remanent magnetism. A magnetic core solenoid device was integrated into the STM system and a strong magnetic tip demagnetization technique was developed, providing a viable technical solution for further enabling single vortex manipulation.
Fund: Project supported by the National Key Research & Development Program of China (Grant Nos. 2019YFA0308600 and 2020YFA0309000), the National Natural Science Foundation of China (Grant Nos. 92365302, 92065201, 22325203, 92265105, 12074247, 12174252, and 52102336), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB28000000), and the Science and Technology Commission of Shanghai Municipality (Grant Nos. 2019SHZDZX01, 19JC1412701, 20QA1405100, 24LZ1401000, and LZPY2024-04). We also acknowledge financial support from the Innovation Program for Quantum Science and Technology (Grant No. 2021ZD0302500).
Bing Xia(夏冰), Hong-Yuan Chen(陈虹源), Jian Zheng(郑健), Bo Yang(杨波), Jie Cai(蔡杰), Yi Zhang(章毅), Yi Yang(杨毅), Hao Yang(杨浩), Dan-Dan Guan(管丹丹), Xiao-Xue Liu(刘晓雪), Liang Liu(刘亮), Yao-Yi Li(李耀义), Shi-Yong Wang(王世勇), Can-Hua Liu(刘灿华), Hao Zheng(郑浩), and Jin-Feng Jia(贾金锋) Manipulation of vortex array via a magnetism-tunable spin-polarized scanning tunnelling microscopy 2025 Chin. Phys. B 34 037402
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