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Superfluidity in Ultrathin Cuprates and Niobium/Ferromagnetic Heterostructures

Hinton, Michael J

Abstract Details

2015, Doctor of Philosophy, Ohio State University, Physics.
The thrust of this dissertation involves superconductivity, or the lack of any resistance in an electric current, which has been of great interest since its discovery in 1911. Contemporary research has turned to ever more complex systems and has found fascinating interactions and new sources of the phenomenon. Our contribution comes from superfluid density, λ-2(0), measurements of Superconducting/Ferromagnetic (S/F) thin film bilayers and trilayers, as well as the high temperature superconducting ceramic cuprate Bi2Sr2CaCu2O8+δ (BSCCO or Bi-2212) films we grow by Pulsed Laser Deposition (PLD). Superconductivity and ferromagnetism are opposing phenomena, resulting in complex interaction. We find the ferromagnet in S/F bilayers has a surprisingly small exchange energy, Eex, and large interface resistance, Rb. This contradicts conventional understanding of these systems, but our study of the theory shows that it is entirely consistent.
Thomas Lemberger (Advisor)
Louis DiMauro (Committee Member)
Fengyuan Yang (Committee Member)
David Stroud (Committee Member)
97 p.

Recommended Citations

Citations

  • Hinton, M. J. (2015). Superfluidity in Ultrathin Cuprates and Niobium/Ferromagnetic Heterostructures [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1420673882

    APA Style (7th edition)

  • Hinton, Michael. Superfluidity in Ultrathin Cuprates and Niobium/Ferromagnetic Heterostructures. 2015. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1420673882.

    MLA Style (8th edition)

  • Hinton, Michael. "Superfluidity in Ultrathin Cuprates and Niobium/Ferromagnetic Heterostructures." Doctoral dissertation, Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1420673882

    Chicago Manual of Style (17th edition)