Potential Fu–Kane Topological Superconductor Island in Bi_(2)Te_(3)/VSi_(x)/Si Nanostructure  

作　　者：Dang Liu Pei-Yuan Cai Yisheng Gu Qiaoyan Yu Shasha Xue Ruijun Xi Xingsen Chen Jice Sun Xian Du Yi Zhang Xuhui Ning Tingwen Miao Pengyu Hu Hao Yang Dandan Guan Xiaoxue Liu Liang Liu Yaoyi Li Shiyong Wang Canhua Liu Yi Zhou Hao Zheng Jinfeng Jia 

机构地区：[1]Tsung-Dao 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]Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [3]University of Chinese Academy of Sciences,Beijing 100190,China [4]Department of Physics,Southern University of Science and Technology,Shenzhen 518055,China [5]Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area(Guangdong),Shenzhen 518045,China

出　　处：《Chinese Physics Letters》2025年第3期197-202,共6页中国物理快报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.92365302,92065201,12488101,22325203,92265105,12074247,12174252,and 52102336);the Ministry of Science and Technology of China(Grant Nos.2019YFA0308600 and 2020YFA0309000);the Science and Technology Commission of Shanghai Municipality(Grant Nos.2019SHZDZX01,19JC1412701,20QA1405100,24LZ1401000,and LZPY2024-04);the financial support from Innovation Program for Quantum Science and Technology(Grant No.2021ZD0302500)。

摘　　要：Topological superconductor islands are thought to be the building blocks of topological quantum bits.We produced single-crystalline VSi_(x)islands with well-defined side facets and island size more than 200nm using molecular beam epitaxy on Si substrate heated to 950℃throughout the growth process.By means of scanning tunneling spectroscopy,we revealed dynamical Coulomb blockade and superconductivity on isolated islands and on islands being connected by superconducting wetting layer respectively.Bi_(2)Te_(3)films were further deposited on VSi_(x)islands.Robust and homogenous proximity effect induced superconductivity was observed on various facets of the Bi_(2)Te_(3)/VSi_(x)hetero-nanostructure.Furthermore,our high-resolution spectroscopy identified Bosonic mode excitations on the topological superconductor islands.These results may establish a playground for the vortex Majorana islands.

关 键 词：process. SUPERCONDUCTOR TOPOLOGICAL 

分 类 号：O41[理学—理论物理]