Adam J. Hauser,1 Jeremy M. Lucy,2 Michael W. Gaultois,3 Molly R. Ball,4 Jennifer R. Soliz,5 Yongseong Choi,6 Oscar D. Restrepo,4 Wolfgang Windl,4 John W. Freeland,6 Daniel Haskel,6 Patrick M. Woodward,5 and Fengyuan Yang2 1California Nanosystems Institute, University of California, Santa Barbara, California 93106, USA 2Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA 3Materials Research Laboratory, University of California, Santa Barbara, California 93106, USA 4Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210, USA 5Department of Chemistry, The Ohio State University, Columbus, Ohio 43210, USA 6Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA (Received 28 December 2013; published 8 May 2014)