Compute::MagneticNevotCroceTransition Namespace Reference

Description

Implements the magnetic Fresnel computation with Nevot-Croce roughness.

Implements the transfer matrix formalism for the calculation of wave amplitudes of the coherent wave solution in a sample with magnetization. For a description, see internal document "Polarized Implementation of the Transfer Matrix Method"

Functions
std::pair< SpinMatrix, SpinMatrix >	backwardsSubmatrices (const MatrixFlux &coeff_i, const MatrixFlux &coeff_i1, double sigma)

Function Documentation

backwardsSubmatrices()

std::pair< SpinMatrix, SpinMatrix > Compute::MagneticNevotCroceTransition::backwardsSubmatrices	(	const MatrixFlux &	coeff_i,
		const MatrixFlux &	coeff_i1,
		double	sigma
	)

Definition at line 70 of file TransitionMagneticNevot.cpp.

{
    SpinMatrix roughness_sum = SpinMatrix::One();
    SpinMatrix roughness_diff = SpinMatrix::One();
    if (sigma != 0.) {
        const auto ret = computeRoughnessMatrices(coeff_i, coeff_i1, sigma);
        roughness_sum = std::get<0>(ret);
        roughness_diff = std::get<1>(ret);
    }
 
    const auto P = SpinMatrix(coeff_i.computeInverseP() * coeff_i1.computeP());
    const auto mp = 0.5 * (SpinMatrix::One() + P) * roughness_diff;
    const auto mm = 0.5 * (SpinMatrix::One() - P) * roughness_sum;
 
    return {mp, mm};
}

References MatrixFlux::computeInverseP(), MatrixFlux::computeP(), and SpinMatrix::One().

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