Spin-Selective Electron Quantum Transport in Nonmagnetic MgZnO/ZnO Heterostructures
Abstract
We report magnetotransport measurements on a high-mobility two-dimensional electron system at the nonmagnetic MgZnO/ZnO heterointerface showing distinct behavior for electrons with spin-up and spin-down orientations. The low-field Shubnikov–de Haas oscillations manifest alternating resistance peak heights which can be attributed to distinct scattering rates for different spin orientations. The tilt-field measurements at a half-integer filling factor reveal that the majority spins show usual diffusive behavior, i.e., peaks with the magnitude proportional to the index of the Landau level at the Fermi energy. By contrast, the minority spins develop "plateaus" with the magnitude of dissipative resistivity that is fairly independent of the Landau level index and is of the order of the zero-field resistivity.
Additional Information
© 2015 American Physical Society. (Received 26 March 2015; published 5 November 2015) We acknowledge a fruitful discussion with M. Kawamura, M. Onoda, M. Shayegan, H. Aoki, and N. Nagaosa. This work was partly supported by Grants-in-Aid for Scientific Research (S) No. 24226002 and No. 24224009 from MEXT, Japan, "Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST)" Program from the Japan Society for the Promotion of Science (JSPS) initiated by the Council for Science and Technology Policy.Attached Files
Published - PhysRevLett.115.197601.pdf
Supplemental Material - Supplementary_Information_Final.pdf
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Additional details
- Eprint ID
- 102291
- Resolver ID
- CaltechAUTHORS:20200402-144733416
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
- 24226002
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
- 24224009
- Japan Society for the Promotion of Science (JSPS)
- Council for Science and Technology Policy (CSTP)
- Created
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2020-04-03Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field