publication . Article . Preprint . 2001

Experimental evidence of the dependence of spin tunneling on the concentration of dislocations in Mn12 crystals

Joan Manel Hernàndez; Elies Molins; A. García-Santiago; Javier Tejada; Francesc Torres;
Open Access
  • Published: 25 Oct 2001 Journal: Journal of Magnetism and Magnetic Materials, volume 272-276, pages 1,111-1,112 (issn: 0304-8853, Copyright policy)
  • Publisher: Elsevier BV
We present experimental results on resonant spin tunnelling in a single crystal of Mn$_{12}$-2Cl benzoate with different concentration of dislocations. The time evolution of the magnetisation follows the stretched exponential over a few time decades. The values of parameters of stretched exponential deduced from experiment have been used to determine the concentration of dislocations before and after the cooling-annealing process, using the algorithm recently suggested by Garanin and Chudnovsky.
arXiv: Condensed Matter::Materials ScienceCondensed Matter::Strongly Correlated Electrons
free text keywords: Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Condensed Matter - Materials Science, Time evolution, Crystal, Magnetization, Dislocation, Scaling, Tunnel effect, Quantum tunnelling, Single crystal, Materials science
27 references, page 1 of 2

[1] J.R. Friedman, M.P. Sarachik, J. Tejada and R. Ziolo, Phys. Rev. Lett., 76 (1996) 3830

[2] J.M. Hernandez, X.X. Zhang, F. Luis, J. Bartolom´e, J. Tejada and R. Ziolo,Europhys. Lett., 35 (1996) 301

[3] L. Thomas, F. Lionti, R. Ballou, D. Gatteschi, R. Sessoli and B. Barbara, Nature, 383 (1996) 145

[4] J.A.A.J. Perenboom, J.S. Brooks, S. Hill, T. Hathaway and N.S. Dalal, Phys. Rev.B, 58 (1998) 330

[5] W. Wernsdorfer, R. Sessoli and D. Gatteschi, Europhys. Lett., 47 (1999) 254

[6] L. Bokacheva, A.D. Kent and M.A. Walters, Phys. Rev. Lett., 85 (2000) 403

[7] D.A. Garanin and E.M. Chudnovsky, Phys. Rev. B, 56 (1997) 11102

[8] F. Luis, J. Bartolom´e and J.F. Ferna´ndez, Phys. Rev. B, 57 (1998) 505

[9] N.V. Prokof'ev and P.C.E Stamp, Phys. Rev. Lett., 80 (1998) 5794

[10] M.N. Leuenberger and D. Loss, Europhys. Lett., 46 (1999) 692

[11] A. Garg, Phys. Rev. Lett., 81 (1998) 1513

[12] E.M.Chudnovsky and D.A.Garanin,, arXiv:cond-mat/0105195

[13] D.A. Garanin and E.M.Chudnovsky,, arXiv:cond-mat/0105518

[14] K.M. Mertes et al.,, arXiv:cond-mat/0106579

[15] K. Park et al.,, arXiv:cond-mat/0106276

27 references, page 1 of 2
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