Magnetic charge's relaxation propelled electricity in two-dimensional magnetic honeycomb lattice
Yiyao Chen,
George Yumnam,
Jiasen Guo,
Laura Stingaciu,
Piotr Zolnierczuk,
Valeria Lauter,
Deepak K. Singh
Affiliations
Yiyao Chen
Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA
George Yumnam
Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA
Jiasen Guo
Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA
Laura Stingaciu
Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
Piotr Zolnierczuk
Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA; Forschungszentrum Julich GmbH, JCNS Outstation at SNS, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
Valeria Lauter
Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
Deepak K. Singh
Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA; Corresponding author
Summary: Emerging new concepts, such as magnetic charge dynamics in two-dimensional magnetic material, can provide novel mechanism for spin-based electrical transport at macroscopic length. In artificial spin ice of single domain elements, magnetic charge's relaxation can create an efficient electrical pathway for conduction by generating fluctuations in local magnetic field that couple with conduction electron spins. In a first demonstration, we show that the electrical conductivity is propelled by more than an order of magnitude at room temperature due to magnetic charge defects sub-picosecond relaxation in artificial magnetic honeycomb lattice. The direct evidence to the proposed electrical conduction mechanism in two-dimensional frustrated magnet points to the untapped potential for spintronic applications in this system.
