Interface-induced superconductivity at ∼25 K at ambient pressure in undoped CaFe 2 As 2 single crystals
Abstract
One of the major goals for scientists in the field of superconductivity and materials science has been to obtain superconductors with higher critical temperatures (T c ). One way that has long been proposed to achieve enhanced T c s is to take advantage of artificially or naturally assembled interfaces. The present work clearly demonstrates that high-T c superconductivity in the well-known nonsuperconducting compound CaFe 2 As 2 can be induced by antiferromagnetic/metallic layer stacking and provides the most direct evidence to date for the interface-enhanced T c in this compound. The observations offer an avenue to higher T c.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 31, 2016
- Source ID
- 10.1073/pnas.1616264113
Entities
People
- Bing Lv
- Ching-Wu Chu
- Kui Zhao
- Liangzi Deng
- Shu-yuan Huyan
- Yu-yi Xue
Organizations
- Air Force Office of Scientific Research
- Lawrence Berkeley National Laboratory
- University of Houston
- University of Texas at Dallas