Atomic and electronic structures of superconducting BaFe 2 As 2 / SrTiO 3 superlattices

Atomic and electronic structures of superconducting BaFe2As2/SrTiO3 superlattices P. Gao,1,* Y. Zhang,1,2 S. Y. Zhang,1,2 S. Lee,3,† J. Weiss,4 J. R. Jokisaari,1 E. E. Hellstrom,4 D. C. Larbalestier,4 C. B. Eom,3 and X. Q. Pan1,‡ 1Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA 2National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, People’s Republic of China 3Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA 4Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University, 2031 East Paul Dirac Drive, Tallahassee, Florida 32310, USA (Received 20 July 2014; revised manuscript received 22 January 2015; published 31 March 2015)