Elektronische Wärmeleitung von supraleitenden Blei-Mangan-Legierungen

Measurements of the electronic thermal conductivity of superconducting lead and lead-manganese-alloys are reported. The samples are quench condensed-films. The thermal conductance of lead films is in good agreement with the BRT-theory. In spite of lead-manganese perhaps being a Kondo-system the thermal conductivity of this alloy is reasonably well described by the Ambegaokar-Griffin theory. Our measurements do not agree with those on indium-manganese alloys reported by other authors.