Observation of quasi-two-dimensional superconductivity at the EuO-BaBiO3 interface
Weiliang Qiao, Jiali Zhao, Yuxiao Chen, Shenggen Cao, Wenyu Xing, Ranran Cai, Liangliang Guo, Tian Qian, X. C. Xie, Wei Han
DOI 10.1103/PhysRevB.109.054509 · Physical Review B
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Abstract
The recent discoveries of superconducting oxide interfaces provide new platforms to explore the exotic superconducting properties in the two-dimensional (2D) regime. In this paper, we report the observation of quasi-2D superconductivity at the EuO/BaBiO3 (001) interface with the superconducting transition temperature of ∼3.5 K. The current-voltage characteristics reveal the signature of a Berezinski-Kosterlitz-Thouless transition, which indicates the existence of quasi-2D superconducting interface. Furthermore, the quasi-2D nature is also supported by the temperature- and angle-dependent upper critical fields. The realization of quasi-2D superconductivity in the BaBiO3 heterostructures could be useful for the emergent research field of superconducting oxide interfaces.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| EuO/BaBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.51 | Pressure not reported | zero_resistance |
| EuO/BaBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.43 | Pressure not reported | zero_resistance |
| BaBi1-xPbxO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
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