title: Superconductivity and the d-Shell.
abstract: The various isotope effects on the superconducting transition temperature of Mo(2)B and W(2)B have been measured. Together with resistivity data they indicate that the d-shell forms a highly stable electron configuration for molybdenum and tungsten. This leads to an understanding of high superconducting transition temperatures.
authors.forename: J J
authors.initials: JJ
authors.lastname: Engelhardt
authors.forename: G W
authors.initials: GW
authors.lastname: Webb
authors.forename: B T
authors.initials: BT
authors.lastname: Matthias