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)