Electronic states of Pd-H alloys from de Haas-van Alphen measurements

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Abstract
The results of dHvA torque measurements and hydrostatic pressure dHvA measurements on dilute palladium-hydrogen alloys show that, for the hole pockets at points X and L of the Brillouin zone, the observed changes in the extremal orbit areas, as a function of hydrogen concentration, are up to one order of magnitude smaller than the predictions of various band models. This implies that, at low concentrations, the added hydrogen electrons do not fill palladium d bands, a result in agreement with Faulkner's recent CPA calculation for nonstoichiometric Pd-H.