Polarization-dependent Landau level crossing in a two-dimensional electron system in a MgZnO/ZnO heterostructure
Abstract
We report electrical transport measurements in a tilted magnetic field on a high-mobility two-dimensional electron system (2DES) confined at the MgZnO/ZnO heterointerface. The observation of multiple crossing events of spin-resolved Landau levels (LLs) enables the mapping of the sequence of electronic states. We further measure the renormalization of electron spin susceptibility at zero field and the susceptibility dependence on the electron spin polarization. The latter manifests the deviation from the Pauli spin susceptibility. As a result, the crossing of spin-resolved LLs shifts to smaller tilt angles and the first Landau level coincidence event is absent even when the magnetic field has only a component perpendicular to the 2DES plane.
Additional Information
© 2014 American Physical Society. (Received 21 October 2014; revised manuscript received 3 December 2014; published 18 December 2014) We would like to thank J. H. Smet, D. Zhang, B. Friess, and L. Tiemann for fruitful discussions. This work was partly supported by the Grant-in-Aid for Scientific Research (S)No. 24226002 from MEXT, Japan, and the "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 - PhysRevB.90.245303.pdf
Accepted Version - 1409.7761.pdf
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Additional details
- Eprint ID
- 102315
- Resolver ID
- CaltechAUTHORS:20200403-115230571
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
- 24226002
- 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