Yuval Gefen, B.B. Mandelbrot, et al.
Journal of Statistical Physics
Cubic n-component spin systems exhibit two distinct quadratic spin anisotropy crossover exponents, appropriate for axial and diagonal anisotropies. Results for n→∞ and to order ε{lunate}2, and for nm-component systems are given, and relevance to multi-critical points in various systems is discussed. © 1976.
Yuval Gefen, B.B. Mandelbrot, et al.
Journal of Statistical Physics
J.D. Brock, A. Aharony, et al.
Physical Review Letters
H. Rohrer, A. Aharony, et al.
Journal of Magnetism and Magnetic Materials