Abstract
We report on investigations of the quantum Hall chiral edge states using a near-field scanning optical microscope that enables us to irradiate circularly polarized light from the probe tip with spatial resolution below the diffraction limit. We have found a clear evidence for the formation of spin-split incompressible strips near the edge of a two-dimensional electron system in high magnetic fields.
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Acknowledgments
We acknowledge the stimulated discussion in the meeting of the Cooperative Research Project of the Research Institute of Electrical Communication, Tohoku University.
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This work was partly supported by Kakenhi Nos. 22103002, 25103704, 26610079, 15H03673, 15H05853.
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Nomura, S., Mamyouda, S., Ito, H. et al. Circularly polarized near-field scanning optical microscope for investigations of edge states of a two-dimensional electron system. Appl. Phys. A 121, 1341–1345 (2015). https://doi.org/10.1007/s00339-015-9420-9
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DOI: https://doi.org/10.1007/s00339-015-9420-9