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Claes Thelander

Claes Thelander

Associate Professor

Claes Thelander

Effects of Parity and Symmetry on the Aharonov-Bohm Phase of a Quantum Ring


  • Rousan Debbarma
  • Heidi Potts
  • Calle Janlén Stenberg
  • Athanasios Tsintzis
  • Sebastian Lehmann
  • Kimberly Dick
  • Martin Leijnse
  • Claes Thelander

Summary, in English

We experimentally investigate the properties of one-dimensional quantum rings that form near the surface of nanowire quantum dots. In agreement with theoretical predictions, we observe the appearance of forbidden gaps in the evolution of states in a magnetic field as the symmetry of a quantum ring is reduced. For a twofold symmetry, our experiments confirm that orbital states are grouped pairwise. Here, a π-phase shift can be introduced in the Aharonov-Bohm relation by controlling the relative orbital parity using an electric field. Studying rings with higher symmetry, we note exceptionally large orbital contributions to the effective g-factor (up to 300), which are many times higher than those previously reported. These findings show that the properties of a phase-coherent system can be significantly altered by the nanostructure symmetry and its interplay with wave function parity.


  • NanoLund: Center for Nanoscience
  • Solid State Physics
  • Centre for Analysis and Synthesis

Publishing year





Nano Letters

Document type

Journal article


The American Chemical Society (ACS)


  • Condensed Matter Physics


  • Aharonov-Bohm effect
  • parity
  • quantum dot
  • quantum ring
  • symmetry




  • ISSN: 1530-6984