Angle-resolved photoemission studies of lattice polaron formation in the cuprate Ca2CuO2Cl2

K. M. Shen,1,2 F. Ronning,1,* W. Meevasana,1 D. H. Lu,1 N. J. C. Ingle,1,2 F. Baumberger,1,† W. S. Lee,1 L. L. Miller,3 Y. Kohsaka,4 M. Azuma,5 M. Takano,5 H. Takagi,4,6 and Z.-X. Shen1 1Department of Applied Physics, Department of Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA 2Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4 3Department of Chemistry, University of Oregon, Eugene, Oregon 97403, USA 4Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan 5Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan 6RIKEN, The Institute for Physical and Chemical Research, Wako 351-0198, Japan Received 24 January 2007; published 22 February 2007