Abstract
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.
Original language | English |
---|---|
Article number | 102206 |
Journal | iScience |
Volume | 24 |
Issue number | 3 |
DOIs | |
State | Published - Mar 19 2021 |
Funding
We thank Antonio Faraone and Michihiro Nagao for helpful discussion. D.K.S. thankfully acknowledges the support by the Department of Energy , Office of Science, Office of Basic Energy Sciences under the grant no. DE-SC0014461 . This work utilized the facilities supported by the Office of Basic Energy Sciences, US Department of Energy.
Keywords
- Electromagnetics
- Magnetic Materials
- Magnetism