Superconductivity with topological surface state in SrxBi2Se3
Zhongheng Liu, Xiong Yao, Jifeng Shao, Ming Zuo, Li Pi, Shun Tan,, Changjin Zhang, Yuheng Zhang
TL;DR
This paper reports the discovery of superconductivity in Sr-intercalated Bi2Se3, with evidence of topological surface states, offering a stable material platform for studying topological superconductivity.
Contribution
It demonstrates superconductivity with topological surface states in Sr0.065Bi2Se3 and confirms the Dirac spectrum through transport measurements, highlighting its stability for future research.
Findings
Superconductivity with ~91.5% shielding volume fraction at 0.5 K
Transport evidence of topological surface states via Shubnikov-de Hass oscillations
Material stability under air exposure
Abstract
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. The analysis of the Shubnikov-de Hass oscillations confirms the 1/2-shift expected from a Dirac spectrum, giving transport evidence of the existence of surface states. Importantly, the SrxBi2Se3superconductor is stable under air, making the SrxBi2Se3 compound an ideal material base for investigating topological superconductivity.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.