Výsledky vyhledávání - "Verdaguer, M"

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Local Magnetic Susceptibility of the Positive Muon in the Quasi 1D S=1/2 Antiferromagnet dichlorobis (pyridine) copper (II)

Autor: Chakhalian, J. A., Kiefl, R. F., Miller, R., Brewer, J., Dunsiger, S. R., Morris, G., MacFarlane, W. A., Sonier, J. E., Eggert, S., Affleck, I., Keren, A., Verdaguer, M.

We report muon spin rotation measurements of the local magnetic susceptibility around a positive muon in the paramagnetic state of the quasi one-dimensional spin 1/2 antiferromagnet dichlorobis (pyridine) copper (II). Signals from three distinct site

Externí odkaz: http://arxiv.org/abs/cond-mat/0301507

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Exchange couplings in the magnetic molecular cluster Mn12Ac

Autor: Regnault, N., Jolicoeur, Th., Sessoli, R., Gatteschi, D., Verdaguer, M.

Publikováno v: Phys. Rev. B 66, 054409 (2002).

The magnetic properties of the molecular cluster Mn12Ac are due to the four Mn3+ ions which have spins S=3/2 and the eight Mn4+ ions with spins S=2. These spins are coupled by superexchange mechanism. We determine the four exchange couplings assuming

Externí odkaz: http://arxiv.org/abs/cond-mat/0203480

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Magnetic quantum tunneling in the half-integer high spin molecule CrNi6: a muSR study

Autor: Keren, A., Mendels, P., Kratzer, A., Scuiller, A., Verdaguer, M., Slaman, Z., Baines, C.

In high spin molecules metal ions are coupled by ferro or antiferromagnetic short range interactions so that their magnetic moments are parallel or antiparallel to each other at temperatures (T) much smaller than the coupling constant J. This leads t

Externí odkaz: http://arxiv.org/abs/cond-mat/9806230

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