Low-temperature magnetic susceptibility, zero-field muon spin resonance and specific heat measurements have been performed in the quasi-one-dimensional (1D) molecular helimagnetic compound Gd (hfac)3 NITEt. The specific heat presents two anomalies at T0 = 2.19 (2) K and TN = 1.88 (2) K, while susceptibility and zero-field muon spin resonance show anomalies only at TN = 1.88 (2) K. The results suggest an experimental validation of Villain's conjecture of a two-step magnetic ordering in quasi-1D XY helimagnets: the paramagnetic phase and the helical spin solid phases are separated by a chiral spin liquid, where translational invariance is broken without violation of rotational invariance.
Experimental validation of Villain’s conjecture about magnetic ordering in quasi-1D helimagnets / F. Cinti, A. Rettori, M.G. Pini, M. Mariani, E. Micotti, A. Lascialfari, N. Papinutto, A. Amato, A. Caneschi, D. Gatteschi, M. Affronte. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - 322:9-12(2010), pp. 1259-1261. [10.1016/j.jmmm.2009.04.025]
Experimental validation of Villain’s conjecture about magnetic ordering in quasi-1D helimagnets
A. Lascialfari;
2010
Abstract
Low-temperature magnetic susceptibility, zero-field muon spin resonance and specific heat measurements have been performed in the quasi-one-dimensional (1D) molecular helimagnetic compound Gd (hfac)3 NITEt. The specific heat presents two anomalies at T0 = 2.19 (2) K and TN = 1.88 (2) K, while susceptibility and zero-field muon spin resonance show anomalies only at TN = 1.88 (2) K. The results suggest an experimental validation of Villain's conjecture of a two-step magnetic ordering in quasi-1D XY helimagnets: the paramagnetic phase and the helical spin solid phases are separated by a chiral spin liquid, where translational invariance is broken without violation of rotational invariance.Pubblicazioni consigliate
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