Magnetic anisotropy and ferromagnetic correlations above the Curie temperature in Eu2CuSi3 single crystals

C. D. Cao,1,2 R. Klingeler,1,3 H. Vinzelberg,1 N. Leps,1 W. Loser,1 G. Behr,1 F. Muranyi,1,4 V. Kataev,1 and B. Buchner1 1Leibniz-Institut fur Festkorperund Werkstoffforschung (IFW) Dresden, Postfach 270116, D-01171 Dresden, Germany 2Department of Applied Physics, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China 3Kirchhoff Institute for Physics, University of Heidelberg, INF 227, D-69120 Heidelberg, Germany 4Physics Institute, University of Zurich, Winterthurerstr. 190, 8057 Zurich, Switzerland Received 19 November 2009; revised manuscript received 19 July 2010; published 27 October 2010