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Ebert - Psi-k

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Ludwig<br />

Maximilians-<br />

Universität<br />

München<br />

CPA condition<br />

Embedding of an A- or B-atom into the CPA-medium – in<br />

the average – should not give rise to additional<br />

scattering<br />

x A + x B =<br />

x A τ nn<br />

A<br />

+ x Bτ nn<br />

B<br />

= τ nn<br />

CP A<br />

with the projected scattering path operator τ nn<br />

α<br />

τ nn<br />

α<br />

= τ nn<br />

CP A<br />

[<br />

1 +<br />

(<br />

t −1<br />

α<br />

)<br />

− t−1 CP A<br />

] −1<br />

τ nn<br />

CP A<br />

KKR07 – p.50/100

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