Low-temperature specific heat, magnetic susceptibility, and zero-field muon spin resonance (SR)measurements have been performed in the quasi-one-dimensional molecular helimagnetic compoundGdhfac3NITEt. The specific heat presents two anomalies at T02:190:02K and TN 1:880:02K,which both disappear upon the application of a weak magnetic field. Conversely, magnetic susceptibilityand SR data show the divergence of two-spin correlation functions only at TN 1:88 0:02 K. Theseresults suggest an experimental validation of Villain’s conjecture of a two-step magnetic ordering in quasione-dimensional XY helimagnets; i.e., the paramagnetic phase and the helical spin solid phase areseparated by a chiral spin liquid phase, where translational invariance is broken without violation ofrotational invariance.
Two-Step Magnetic Ordering in Quasi-One-Dimensional Helimagnets: Possible Experimental Validation of Villain’s Conjecture about a Chiral Spin Liquid Phase / F., C., A., R., M. G., P., M., M., E., M., A., L., N., P., A., A., A., C., D., G., Affronte, M.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 100:(2008), pp. 057203-057207. [10.1103/PhysRevLett.100.057203]
Two-Step Magnetic Ordering in Quasi-One-Dimensional Helimagnets: Possible Experimental Validation of Villain’s Conjecture about a Chiral Spin Liquid Phase
AFFRONTE, Marco
2008
Abstract
Low-temperature specific heat, magnetic susceptibility, and zero-field muon spin resonance (SR)measurements have been performed in the quasi-one-dimensional molecular helimagnetic compoundGdhfac3NITEt. The specific heat presents two anomalies at T02:190:02K and TN 1:880:02K,which both disappear upon the application of a weak magnetic field. Conversely, magnetic susceptibilityand SR data show the divergence of two-spin correlation functions only at TN 1:88 0:02 K. Theseresults suggest an experimental validation of Villain’s conjecture of a two-step magnetic ordering in quasione-dimensional XY helimagnets; i.e., the paramagnetic phase and the helical spin solid phase areseparated by a chiral spin liquid phase, where translational invariance is broken without violation ofrotational invariance.
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