\(\renewcommand\AA{\unicode{x212B}}\)

Redfield

Description

The Redfield formula for the LF dependence on the muon spin relaxation rate.

\[\Lambda(t)= A_0\frac{2\gamma^2_\mu H^2_\text{loc}\tau}{1+\gamma^2_\mu H^2_\text{LF} \tau^2}\]

where,

\(A_0\) is the amplitude of asymmetry,

\(H_\text{loc}\) is the local magnetic field,

\(H_\text{LF}\) is the longitudinal magnetic field applied,

and its expression is given as \(\tau = \frac{1}{f}\) where \(f\) is the frequency of fluctuation at muon sites.

(Source code, png, hires.png, pdf)

../../_images/Redfield-1.png

Properties (fitting parameters)

Name

Default

Description

A0

1.0

Hloc

0.1

Local magnetic field (G)

Tau

0.1

Correlation time of muon spins (microsec)

References

[1] Takao Suzuki et al, J. Phys.: Conf. Ser. 502 012041 (2014).

Categories: FitFunctions | Muon\MuonModelling

Source

Python: Redfield.py