Accession Number : ADA625863


Title :   Atomic Engineering of Superconductors by Design


Descriptive Note : Final rept. 1 Jun 2010-31 Jul 2014


Corporate Author : YALE UNIV NEW HAVEN CT


Personal Author(s) : Ahn, C H ; Ismail-Beigi, S ; Moler, K A ; Walker, F J


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA625863


Report Date : 23 Oct 2014


Pagination or Media Count : 14


Abstract : This project utilizes key empirical principles based on known high-temperature superconductors in order to design and fabricate novel heterostructures that exhibit high-temperature superconductivity. Design of heterostructures is accomplished using the predictive capabilities of ab initio density functional theory (DFT) calculations combined with many-body theories of electronic structure, such as dynamical mean field theory (DMFT). Fabrication is accomplished with atomic-layer control by oxide molecular beam epitaxy (MBE) synthesis. Finally, the theoretically derived physical and electronic structures are tested using a variety of microscopic and macroscopic characterization techniques. Our approach to the design of the heterostructures is based on emulating key common properties exhibited by the cuprate family of high-temperature superconductors.


Descriptors :   *SUPERCONDUCTORS , DENSITY FUNCTIONAL THEORY , DYNAMICS , ELECTRONIC EQUIPMENT , FABRICATION , FIELD THEORY , HIGH TEMPERATURE , MEAN FIELD ENERGY , MOLECULAR BEAM EPITAXY , N BODY PROBLEM , OXIDES , PHASE DIAGRAMS , SPIN STATES , STRUCTURAL PROPERTIES , SUPERCONDUCTIVITY , SYNTHESIS(CHEMISTRY) , THIN FILMS , X RAY DIFFRACTION


Subject Categories : Physical Chemistry
      Electrical and Electronic Equipment
      Crystallography
      Solid State Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE