Surface structure and related properties of the (100) surfaces of vanadium and niobium

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Title: Surface structure and related properties of the (100) surfaces of vanadium and niobium
Author: Lacina, David Glenn, 1977-
Abstract: This dissertation addresses atomic -level structure and related properties of the (100 ) surfaces of Vanadium and Niobium . The primary motivation of the surface structure experiments is based on an observation by P .J . Feibelman [[superscript 3 ,4]] that ab -initio calculations of surface relaxation (interplanar separation of near -surface planes ) exhibit significant and consistent deviation from corresponding experimental relaxation values obtained through LEED crystallography . The deviation is much larger than the accepted accuracy of both the theoretical and experimental techniques . Resolving this dilemma is the primary objective for this systematic investigation of multilayer relaxation at transition metal surfaces . This research also addresses important secondary issues . Closely related to the surface relaxation issue for Nb (100 ) are experiments that provide an experimentallydetermined structural basis for the "sub -surface valve" model that has been proposed to explain the novel hydrogen uptake kinetics in Niobium . Definitive experiments that address the longstanding search for ferromagnetic order at the surface of V (100 ) is another important issue .
URI: http : / /hdl .handle .net /2152 /3730
Date: 2008-08-29

Citation

Surface structure and related properties of the (100) surfaces of vanadium and niobium. Doctoral dissertation, The University of Texas at Austin. Available electronically from http : / /hdl .handle .net /2152 /3730 .

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