Authors: Marc de Boissieu; Sonia Francoual; Marek Mihalkovic; Kaoru Shibata; Alfred Q R Baron; Yvan Sidis; Tsutomu Ishimasa; Dongmei Wu; Thomas Lograsso; Louis-Pierre Regnault; Franz Gähler; Satoshi Tsutsui; Bernard Hennion; Pierre Bastie; Taku J Sato; Hiroyuki Takakura; Roland Currat; An-Pang Tsai Journal: Nat Mater Date: 2007-11-04 Impact factor: 43.841