Induced ferromagnetism due to oxygen vacancies at the YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>/SrTiO<sub>3</sub> Interface

ORAL

Abstract

Complex oxide heterostructures provide a large playground of order parameters that can introduce a wide range of emergent phenomena. In the study, we set out to explain the emergent magnetic properties at the interface between YBa2Cu3O7/SrTiO3. Using density functional theory, we determined the electronic and magnetic properties for a simulated heterostructure with and without oxygen vacancies. It is shown that the sheer presence of the interface is not enough to produce a magnetic response. However, with the introduction of oxygen vacancies, we show that there is a shifting of the d orbital electron energies on the transition-metal atoms that induces a magnetic moment at the interface. This work details the effects of oxygen vacancies on complex oxide heterostructures, which has the ability to provide critical insight into future applications of oxide electronics.

*Center for Integrated Nanotechnologies at Los Alamos National Laboratory

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Presenters

  • Jason Haraldsen

    • Department of Physics, University of North Florida
    • University of North Florida

Authors

  • Kyro Boom

    • Department of Physics, University of North Florida

  • Mi He

    • Department of Physics and Applied Physics, Nanyang Technological University

  • Ee Min Chia

    • Nanyang Technological University
    • Department of Physics and Applied Physics, Nanyang Technological University
    • Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
    • School of Physical and Mathematical Sciences, Nanyang Technological University

  • Jian-Xin Zhu

    • Theoretical Division, Los Alamos National Laboratory
    • Los Alamos National Laboratory
    • Theoretical Division and Center for Integrated Nanotechnologies, Los Alamos National Laboratory
    • T4-PHYS OF CONDENSED MATTER & COMPLEX SYS, Los Alamos National Laboratory, Los aAlamos, USA
    • CINT, Los Alamos National Laboratory
    • Center for Integrated Nanotechnologies, Los Alamos National Laboratory
    • Los Alamos National Laboratory,

  • Jason Haraldsen

    • Department of Physics, University of North Florida
    • University of North Florida