Observation of supersymmetric pseudo-Landau levels in strained microwave graphene

Matthieu Bellec; Charles Poli; Ulrich Kuhl; Fabrice Mortessagne; Henning Schomerus

doi:10.1038/s41377-020-00351-2

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Observation of supersymmetric pseudo-Landau levels in strained microwave graphene

Original Articles

- Observation of supersymmetric pseudo-Landau levels in strained microwave graphene
- Observation of supersymmetric pseudo-Landau levels in strained microwave graphene
- LSA 2020年9卷第5期页码：1410-1416
- Affiliations：
  
  1.Institut de Physique de Nice (INPHYNI), Université Côte d'Azur, CNRS, 06108 Nice, France
  2.Department of Physics, Lancaster University, Lancaster LA1 4YB, UK
- Author bio：
  
  Matthieu Bellec (matthieu.bellec@inphyni.cnrs.fr)
  Fabrice Mortessagne (Fabrice.Mortessagne@unice.fr)
  Henning Schomerus (h.schomerus@lancaster.ac.uk)
- Funds：
- DOI：10.1038/s41377-020-00351-2
  中图分类号：
- 纸质出版日期：2020，
  
  网络出版日期：2020-08-19，
  
  收稿日期：2020-01-28，
  
  修回日期：2020-06-04，
  
  录用日期：2020-06-16
- Accepted：
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Observation of supersymmetric pseudo-Landau levels in strained microwave graphene[J]. LSA, 2020,9(5):1410-1416.

Bellec, M. et al. Observation of supersymmetric pseudo-Landau levels in strained microwave graphene. Light: Science & Applications, 9, 1410-1416 (2020).
Observation of supersymmetric pseudo-Landau levels in strained microwave graphene[J]. LSA, 2020,9(5):1410-1416. DOI： 10.1038/s41377-020-00351-2.

Bellec, M. et al. Observation of supersymmetric pseudo-Landau levels in strained microwave graphene. Light: Science & Applications, 9, 1410-1416 (2020). DOI： 10.1038/s41377-020-00351-2.

摘要

Abstract

Using an array of coupled microwave resonators arranged in a deformed honeycomb lattice

we experimentally observe the formation of pseudo-Landau levels in the whole crossover from vanishing to large pseudomagnetic field strengths. This result is achieved by utilising an adaptable setup in a geometry that is compatible with the pseudo-Landau levels at all field strengths. The adopted approach enables us to observe the fully formed flat-band pseudo-Landau levels spectrally as sharp peaks in the photonic density of states and image the associated wavefunctions spatially

where we provide clear evidence for a characteristic nodal structure reflecting the previously elusive supersymmetry in the underlying low-energy theory. In particular

we resolve the full sublattice polarisation of the anomalous 0th pseudo-Landau level

which reveals a deep connection to zigzag edge states in the unstrained case.

关键词

Keywords

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