Manipulation of vortex array via a magnetism-tunable spin-polarized scanning tunnelling microscopy  

作　　者：Bing Xia Hong-Yuan Chen Jian Zheng Bo Yang Jie Cai Yi Zhang Yi Yang Hao Yang Dan-Dan Guan Xiao-Xue Liu Liang Liu Yao-Yi Li Shi-Yong Wang Can-Hua Liu Hao Zheng Jin-Feng Jia 夏冰;陈虹源;郑健;杨波;蔡杰;章毅;杨毅;杨浩;管丹丹;刘晓雪;刘亮;李耀义;王世勇;刘灿华;郑浩;贾金锋

机构地区：[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

出　　处：《Chinese Physics B》2025年第3期190-194,共5页中国物理B(英文版)

基　　金：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.92365302,92065201,22325203,92265105,12074247,12174252,52102336);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB28000000);the Science and Technology Commission of Shanghai Municipality(Grant Nos.2019SHZDZX01,19JC1412701,20QA1405100,24LZ1401000,LZPY2024-04);financial support from the Innovation Program for Quantum Science and Technology(Grant No.2021ZD0302500)。

摘　　要：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_(2) 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.

关 键 词：vortex manipulation scanning tunneling microscope magnetic tip demagnetization technique 

分 类 号：O35[理学—流体力学]