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This fit model is suited to fit resonances with a Frota lineshape.
H.O. Frota, Phys. Rev. B 45, 1096 (1992)
For instance, such resonances occur in interference processes, such as the Kondo effect in scanning tunneling spectroscopy. Notice: Delivers usually a better fit than the Fano lineshape.
Generalized Frota lineshape: S. Frank and D. Jacob, Phys. Rev. B 92, 235127 (2015)
- y_0: offset in y direction
- x_center: center of the resonance
- A: amplitude
- Gamma: width of the resonance
- m: linear background
- phi: lineshape factor