Spin chirality in a molecular dysprosium triangle: The archetype of the noncollinear ising model

Luzon, J; Bernot, K; Hewitt, Ij; Anson, C. E.; Powell, A. K.; Sessoli, Roberta

Single crystal magnetic studies combined with a theoretical analysis show that cancellation of the magnetic moments in the trinuclear Dy(3+) cluster [Dy(3)(mu(3)-OH)(2)L(3)Cl(H(2)O)(5)]Cl(3), resulting in a nonmagnetic ground doublet, originates from the noncollinearity of the single-ion easy axes of magnetization of the Dy(3+) ions that lie in the plane of the triangle at 120 degrees one from each other. This gives rise to a peculiar chiral nature of the ground nonmagnetic doublet and to slow relaxation of the magnetization with abrupt accelerations at the crossings of the discrete energy levels.

Spin chirality in a molecular dysprosium triangle: The archetype of the noncollinear ising model / Luzon J; Bernot K; Hewitt IJ; C E. Anson; A K. Powell; R Sessoli. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 100(2008), pp. 247205-1-247205-4.

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Titolo:	Spin chirality in a molecular dysprosium triangle: The archetype of the noncollinear ising model
Autori di Ateneo:	Luzon J Bernot K Hewitt IJ C. E. Anson A. K. Powell SESSOLI, ROBERTA mostra contributor esterni nascondi contributor esterni
Autori:	Luzon J; Bernot K; Hewitt IJ; C. E. Anson; A. K. Powell; SESSOLI, ROBERTA
Data di pubblicazione:	2008
Rivista:	PHYSICAL REVIEW LETTERS
Volume:	100
Pagina iniziale:	247205-1
Pagina finale:	247205-4
Abstract:	Single crystal magnetic studies combined with a theoretical analysis show that cancellation of the magnetic moments in the trinuclear Dy(3+) cluster [Dy(3)(mu(3)-OH)(2)L(3)Cl(H(2)O)(5)]Cl(3), resulting in a nonmagnetic ground doublet, originates from the noncollinearity of the single-ion easy axes of magnetization of the Dy(3+) ions that lie in the plane of the triangle at 120 degrees one from each other. This gives rise to a peculiar chiral nature of the ground nonmagnetic doublet and to slow relaxation of the magnetization with abrupt accelerations at the crossings of the discrete energy levels.
Handle:	http://hdl.handle.net/2158/390123
Appare nelle tipologie:	1a - Articolo su rivista

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