Minority-spin states for V and Mn on Ag(111) by inverse photoemission

Unoccupied states have been observed with momentum-resolved inverse photoemission for thin layers of V and Mn on Ag(111) ranging from 0.2 monolayer to thick bulklike films. An assignment in terms of exchange- and crystal-field-split 3d states is given by comparison with similar data from the Mn-in-Ag spin glass and with first-principles calculations. The states are located at 0.9 and 1.8 eV above $E_F$ for Mn and at 0.5 and 1.7 eV above $E_F$ for V. The data are consistent with large magnetic moments for V and Mn films up to a monolayer, in contrast to the absence of ferromagnetism in the bulk materials.