Dynamics of paramagnetic metallofullerenes in carbon nanotube peapods - Warner, JH; Watt, AAR; Ge, L; Porfyrakis, K; Akachi, T; Okimoto, H; Ito, Y; Ardavan, A; Montanari, B; Jefferson, JH; Harrison, NM; Shinohara, H; et al. (NANO LETTERS, 2008)