Author/Authors :
Lovett، نويسنده , , B.W. and Blundell، نويسنده , , S.J. and Jestنdt، نويسنده , , Th. and Pratt، نويسنده , , F.L. and Kurmoo، نويسنده , , M. and Tagaki، نويسنده , , S. and Hayes، نويسنده , , W.، نويسنده ,
Abstract :
We report a muon spin relaxation study of the organic spin-Peierls system MEM(TCNQ)2 over the temperature range 39 mK to 200 K. Our results show a crossover from Gaussian to exponential relaxation below the spin-Peierls transition temperature. We attribute this change to the effect of a dilute set of static electronic defect spins resulting from the majority of spins freezing into a non-magnetic spin singlet state.
Keywords :
Structural phase transitions , Magnetic phase transitions , Metal-insulator phase transitions , Muon spin relaxation
