%0 Journal Article
%J Hyperfine Interactions
%D 2007
%T Magnetic properties of Heisenberg triangular antiferromagnet V15 cluster studied by NMR
%A Furukawa, Y.
%A Nishisaka, Y.
%A Kumagai, K.
%A Kogerler, P.
%A Borsa, F.
%K excitations
%K nanoscale molecular magnets
%K nmr
%K spin frustration
%K V-15
%M ISI:000259462700011
%P 65-68
%R 10.1007/s10751-008-9614-z
%V 176
%X The magnetic properties of an s=1/2 Heisenberg triangular antiferromagnet V15 have been studied by proton nuclear magnetic resonance (NMR) at very low temperature down to 100 mK using a He-3-He-4 dilution refrigerator. In total spin S-T=3/2 ground state above 2.7 Tesla, proton spin-lattice relaxation rate (1/T-1) shows thermally activated behavior as a function of temperature. On the other hand, a temperature independent behavior of 1/T-1 at very low temperatures is observed in frustrated S-T=1/2 ground state below 2.7 Tesla. Possible origins for the peculiar behavior of 1/T-1 will be discussed in terms of magnetic fluctuations due to spin frustration.
%Z 14th International Conference on Hyperfine Interactions/18th International Symposium on Nuclear Quadrupole Interactions (HFI/NQI 2007)AUG 05-10, 2007Igauza Falls, ARGENTINA
%8 Apr
%9 Proceedings Paper
%@ 0304-3843