Search for and Study of Novel Superconductor with Higher Tc and Jc
Abstract
The AFOSR support has enabled us to discover new superconductors with higher Tc, for science and potential new applications, or with low Tc but with novel structure-types for new discoveries; to realize new superconducting mechanism for higher Tc; to unravel new physics important to high Tc and Jc; to discover new physics and phenomena in non-superconducting but related compounds for HTS development and devices; to develop single-crystal growth capability and new techniques; to evaluate immediately new discoveries; and to compete effectively against foreign HTS groups. A record Tc up to 49K was discovered in the rare-earth doped CaFe2As2 system, highest in the Fe-based 122 family; the unusually high Tc is attributed to the possible interfacial enhancement mechanism, opening up a new avenue to higher Tc. Interface effect in the artificially grown FeSe/STO system was carefully studied. More than ten new superconductors were discovered, and provide new directions and new synthetic routes to search for higher Tc. New physics and phenomena were discovered in both superconducting and non-superconducting compounds including cuprates, other Fe-based superconductors, multiferroics, topological insulators, and thermoelectric and thermal-conducting materials.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 22, 2015
- Accession Number
- AD1001816
Entities
People
- Ching-Wu Chu
Organizations
- University of Houston