Superconductivity with Topological Surface State in SrxBi2Se3,Journal of the American Chemical Society

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Superconductivity with Topological Surface State in SrxBi2Se3
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2015-08-14 , DOI: 10.1021/jacs.5b06815
Zhongheng Liu _{1,

2} , Xiong Yao _{1,

2} , Jifeng Shao _{1,

2} , Ming Zuo ₂ , Li Pi _{1,

2,

3} , Shun Tan ₂ , Changjin Zhang _{1,

2,

3} , Yuheng Zhang _{1,

2,

3}

Affiliation

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.

中文翻译：

SrxBi2Se3 中具有拓扑表面态的超导性

通过在 Bi2Se3 中插入碱土金属 Sr，在 Sr0.065Bi2Se3 中实现了具有大屏蔽体积分数（~91.5% 在 0.5 K）的超导性。Shubnikov-de Hass 振荡的分析证实了狄拉克光谱预期的半移，提供了表面态存在的传输证据。重要的是，SrxBi2Se3 超导体在空气中是稳定的，这使得 SrxBi2Se3 成为研究拓扑超导的理想材料基础。

更新日期：2015-08-14

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