Superconductivity with Topological Surface State in SrxBi₂Se₃.
By intercalation of alkaline earth metal Sr in Bi2Se3, superconductivity with large shielding volume fraction (∼91.5% at 0.5 K) has been achieved in Sr0.065Bi2Se3. Analysis of the Shubnikov-de Hass oscillations confirms the half-shift expected from a Dirac spectrum, giving transport evidence of the existence of surface states. Importantly, SrxBi2Se3 superconductor is stable under air, making SrxBi2Se3 an ideal material base for investigating topological superconductivity.
High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China , Hefei 230026, PR China.|Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, PR China.
Zhongheng
Z
Liu
High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China , Hefei 230026, PR China.|Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, PR China.
Xiong
X
Yao
High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China , Hefei 230026, PR China.|Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, PR China.
Jifeng
J
Shao
Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, PR China.
Ming
M
Zuo
High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China , Hefei 230026, PR China.|Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, PR China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, PR China.
Li
L
Pi
Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, PR China.
Shun
S
Tan
High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China , Hefei 230026, PR China.|Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, PR China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, PR China.
Changjin
C
Zhang
High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China , Hefei 230026, PR China.|Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, PR China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, PR China.
Yuheng
Y
Zhang