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Is the effective mass dependend on the donator atom in a semiconductor?

In our experiment we have calculated the effective mass in a germanium semiconductor, doped with an unknown atom. It is 0.39m_e. From the internet we know that the effective mass is 0.33m_e.

Is our result equivalent to the litterature value or does it depend on the donator?

Kind regards Alex

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# Effective mass dependency on the donator atom?

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