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Circularly polarized near-field scanning optical microscope for investigations of edge states of a two-dimensional electron system

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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Correspondence to Shintaro Nomura.

Additional information

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

Keywords

  • High Magnetic Field
  • Edge State
  • Bulk Region
  • Confinement Potential
  • Subband Energy