Dipolar ordering in Fe8?

X. Martínez-Hidalgo*, E. M. Chudnovsky, A. Aharony

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


We show that the low-temperature physics of molecular nanomagnets, contrary to the prevailing one-molecule picture, must be determined by the long-range magnetic ordering due to many-body dipolar interactions. The calculations here performed, using Ewald's summation, suggest a ferromagnetic ground state with a Curie temperature of about 130 mK. The energy of this state is quite close to those of an antiferromagnetic state and to a glass of frozen spin chains. The latter may be realized at finite temperature due to its high entropy.

Original languageEnglish
Pages (from-to)273-279
Number of pages7
JournalEurophysics Letters
Issue number2
StatePublished - 11 Jul 2001


FundersFunder number
National Science Foundation
Directorate for Mathematical and Physical Sciences9978882


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