Low-temperature theory of proton NMR in the molecular antiferromagnetic ring Fe10

Europhysics Letters

Volumn 50, Issue 1, 2000, Pages 88-93

  Cornia, A ^a   Fort, A ^b,c   Pini, M G ^b   Rettori, A ^c  

^a UNIVERSITY OF MODENA AND REGGIO EMILIA   (Italy)

^b CNR   (Italy)

^c UNIVERSITY OF FLORENCE   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0034165540     PISSN: 02955075     EISSN: None     Source Type: Journal    
DOI: 10.1209/epl/i2000-00239-3     Document Type: Article

References (13)

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4. TAFT K. L., DELFS C. D., PAPAEFTHYMIOU G. C., FONER S., GATTESCHI D. and LIPPARD S. J., J. Am. Chem. Soc., 116 (1994) 823.
5. CORNIA A., JANSEN A. G. M. and AFFRONTE M., Phys. Rev. B, 60 (1999) 12177.
6. Exact diagonalization of smaller systems (N = 2 and N = 4) and perturbation analysis showed that also in the presence of a transverse field the Hamiltonian (1) is unable to give such a transition. See: CHIOLERO A. and LOSS D., Phys. Rev. Lett., 80 (1998) 169.
7. JULIEN M.-H., JANG Z. H., LASCIALFARI A., BORSA F., HORVATIĆ M., CANESCHI A. and GATTESCHI D., Phys. Rev. Lett., 83 (1999) 227.
8. A similar behavior was observed in an antiferromagnetic gapped quantum magnet when the external magnetic field induced a phase transition to a gapless magnetic regime. See: CHABOUSSANT G., FAGOT-REVURAT Y., JULIEN M.-H., HANSON M. E., BERTHIER C., HORVATIĆ M., LÉVY M. P. and PIOVESANA O., Phys. Rev. Lett., 80 (1998) 2713.
9. MORIYA T., Prog. Theor. Phys., 16 (1956) 23.
10. CARBONI F. and RICHARDS P. M., Phys. Rev., 117 (1969) 889.
11. BENCINI A. and GATTESCHI D., EPR of Exchange Coupled Systems (Springer-Verlag, Berlin) 1990.
12. 2, as explained in the text. The validity of this approximation for large rings is extensively discussed in refs. [3] and [4].
13. FURUKAWA Y., LASCIALFARI A., JANG Z. H. and BORSA F., Proton spin-lattice relaxation at low temperature in the ferromagnetic spin ring Cu6, paper presented at the 44th Annual Conference on Magnetism and Magnetic Materials, San Jose, CA, November 15-18 (1999).