Discrete energy levels of Caroli-de Gennes-Matricon states in quantum limit in FeTe0.55Se0.45

  title={Discrete energy levels of Caroli-de Gennes-Matricon states in quantum limit in FeTe0.55Se0.45},
  author={Mingyang Chen and Xiaoyu Chen and Huan Yang and Zengyi Du and Xiyu Zhu and Enyu Wang and Hai-Hu Wen},
  journal={Nature Communications},
Caroli-de Gennes-Matricon (CdGM) states were predicted in 1964 as low-energy excitations within vortex cores of type-II superconductors. In the quantum limit, the energy levels of these states were predicted to be discrete with the basic levels at ±μΔ2/EF (μ = 1/2, 3/2, 5/2, …) with Δ the superconducting energy gap and EF the Fermi energy. However, due to the small ratio of Δ/EF in most type-II superconductors, it is very difficult to observe the discrete CdGM states, but rather a symmetric… Expand
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