Magnetic Two-Dimensional Electron Gas at A Manganite- Buffered LaAlO<sub>3</sub>/SrTiO<sub>3</sub> Interface

POSTER

Abstract

Magnetic two-dimensional electron gas (2DEG) at the LaAlO3/La7/8Sr1/8MnO3(2uc)/SrTiO3 interface has been fabricated by introducing tiny amounts of magnetic ions into the interfacial layer of SrTiO3. Experiments show that the ferromagnetic order and carrier mobility of the 2DEG have been simultaneously enhanced. The temperature range for the 2DEG to spin-polarized is six-fold increased and the anomalous Hall resistance, which is also opposite in magnetic field dependence to reported one, is tripled compared with the 2DEG without the La7/8Sr1/8MnO3 spacer. There are evidences that fast charge carriers of the 2DEG are responsible for the magnetic coupling between Mn ions in 2DEG. The present work opens a new avenue towards magnetic 2DEG.

Presenters

  • Hongrui Zhang

    • Institute of Physics, Chinese Academy of Sciences
    • State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences
    • the institute of physics
    • Institute of Physics, Chinese Academy of Scienes

Authors

  • Hongrui Zhang

    • Institute of Physics, Chinese Academy of Sciences
    • State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences
    • the institute of physics
    • Institute of Physics, Chinese Academy of Scienes

  • Rui Li

    • State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences
    • the institute of physics

  • Kaiming Qiao

    • State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences
    • the institute of physics
    • Institute of Physics, Chinese Academy of Scienes

  • Fengxia Hu

    • State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences
    • the institute of physics
    • Institute of Physics, Chinese Academy of Scienes

  • Baogen Shen

    • State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences
    • State Key Laboratory of Magnetism, Institute of Physics,Chinese Academy of Sciences.School of Physical Sciences, University of Chinese Academy of Sciences
    • the institute of physics
    • Institute of Physics, Chinese Academy of Scienes

  • Jirong Sun

    • Institute of Physics, Chinese Academy of Sciences
    • State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences
    • the institute of physics
    • Institute of Physics, Chinese Academy of Scienes