Abstract
One of the fundamental properties of an electronic system is its dimensionality. Novel photoemission apparatuses enable a direct determination of the Fermi surface of metals in all three dimensions but the data obtained from transition-metal monolayers appears to defy established experimental and theoretical insights. Our experimental approach resolves all of the existing conflicts surrounding Ni/Cu(100) and similar systems. We suggest the measurement of Fermi-surface projections to optimize spin-dependent transport properties.
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