Journal
PHYSICAL REVIEW E
Volume 87, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.87.042912
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Funding
- DFG [Sonderforschungsbereich 634]
- German Space Agency DLR
- Federal Ministry of Economics and Technology (BMWi) [DLR 50WH0837]
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Quantum wires and electromagnetic waveguides possess common features since their physics is described by the same wave equation. We exploit this analogy to investigate experimentally with microwave waveguides and theoretically with the help of an effective potential approach the occurrence of bound states in sharply bent quantum wires. In particular, we compute the bound states, study the features of the transition from a bound to an unbound state caused by the variation of the bending angle, and determine the critical bending angles at which such a transition takes place. The predictions are confirmed by calculations based on a conventional numerical method as well as experimental measurements of the spectra and electric field intensity distributions of electromagnetic waveguides. DOI: 10.1103/PhysRevE.87.042912
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