The Measured Resistivity of Epitaxial Tungsten Layers With (001) and (011) Crystal Orientation vs Th (IMAGE)

American Institute of Physics

The Measured Resistivity of Epitaxial Tungsten Layers With (001) and (011) Crystal Orientation vs Th

Caption

The measured resistivity of epitaxial tungsten layers with (001) and (011) crystal orientation vs thickness d. The tungsten Fermi surface is color coded according to the wave vector dependent Fermi velocity vf. At small thickness, where surface scattering dominates, W(011) is nearly twice as conductive as W(001). Transport simulations indicate that this is due to the anisotropy in the Fermi surface. These results indicate how narrow wires in future computer chips can be made two times more conductive, effectively reducing the required electric power by 50 percent.

Credit

Daniel Gall, Rensselaer Polytechnic Institute

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