M ay 2 00 8 Persistent Spin Dynamics in the S = 1 / 2 V 15 Molecular Nano-Magnet

X iv :0 80 5. 21 64 v1 [ co nd -m at .m es -h al l] 1 4 M ay 2 00 8 Persistent Spin Dynamics in the S = 1/2 V15 Molecular Nano-Magnet Z. Salman, 2, ∗ R.F. Kiefl, 4, 5 K. H. Chow, W.A. MacFarlane, T. Keeler, T. Parolin, S. Tabbara, and D. Wang Clarendon Laboratory, Department of Physics, Oxford University, Parks Road, Oxford OX1 3PU, UK ISIS Facility, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, UK TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T 2A3, Canada Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada Canadian Institute for Advanced Research, Canada Department of Physics, University of Alberta, Edmonton, AB, T6G 2G7, Canada Department of Chemistry, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada