We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Artificially engineered superlattices of pnictide superconductors.
- Authors
Lee, S.; Tarantini, C.; Gao, P.; Jiang, J.; Weiss, J. D.; Kametani, F.; Folkman, C. M.; Zhang, Y.; Pan, X. Q.; Hellstrom, E. E.; Larbalestier, D. C.; Eom, C. B.
- Abstract
Significant progress has been achieved in fabricating high-quality bulk and thin-film iron-based superconductors. In particular, artificial layered pnictide superlattices offer the possibility of tailoring the superconducting properties and understanding the mechanism of the superconductivity itself. For high-field applications, large critical current densities (Jc) and irreversibility fields (Hirr) are indispensable along all crystal directions. On the other hand, the development of superconducting devices such as tunnel junctions requires multilayered heterostructures. Here we show that artificially engineered undoped Ba-122/Co-doped Ba-122 compositionally modulated superlattices produce ab-aligned nanoparticle arrays. These layer and self-assemble along c-axis-aligned defects, and combine to produce very large Jc and Hirr enhancements over a wide angular range. We also demonstrate a structurally modulated SrTiO3(STO)/Co-doped Ba-122 superlattice with sharp interfaces. Success in superlattice fabrication involving pnictides will aid the progress of heterostructured systems exhibiting new interfacial phenomena and device applications.
- Subjects
DOPED semiconductor superlattices; SUPERCONDUCTORS; SUPERCONDUCTIVITY; FABRICATION (Manufacturing); SUPERCONDUCTING epitaxial layers
- Publication
Nature Materials, 2013, Vol 12, Issue 5, p392
- ISSN
1476-1122
- Publication type
Article
- DOI
10.1038/nmat3575