Surface ferromagnetism of palladium induced by strong electric field

A strong external electric field can accumulate excess holes (electrons) and lower (raise) the Fermi level at a surface of a nearly ferromagnetic metal. Due to a peak in the density of states of palladium just below the Fermi level, the DOS increases with the lowering of the Fermi level and, therefore, the Stoner criterion of ferromagnetism can be satisfied in a surface layer under the external electric field. A feasibility of the controlled surface ferromagnetism of palladium in a scanning tunneling microscope and a field-effect-transistor structure is discussed.