Investigation of the magnetic fluctuations in Tb${}_2$Sn${}_2$O${}_7$ ordered spin ice by high resolution energy-resolved neutron scattering

Abstract

We have studied magnetically frustrated Tb${}_2$Sn${}_2$O${}_7$ by neutron diffraction and high resolution energy-resolved neutron scattering. At 0.1 K, we observe short range magnetic correlations with a typical scale of 4 Å, close to the near neighbor distance between Tb${}^{3+}$ ions. %(3.686 Å), This short range order coexists with ferromagnetic correlations and long range spin ice order at the scales of 18 and 190 Å, respectively. Spin dynamics was investigated at a time scale down to 10${}^{-9}$s, by energy-resolved experiments on a backscattering spectrometer. We observe a freezing of the spin dynamics for all length-scales, with a strong slowing down of the spin fluctuations when long range order settles in. We discuss the spin fluctuations remaining in the ground state in comparison with previous data obtained by muon spectroscopy.

6 pages, 5 figures

References in corpus (6)

• Dy2Ti2O7 Spin Ice: a Test Case for Emergent Clusters in a Frustrated Magnet
• A Three Dimensional Kasteleyn Transition: Spin Ice in a [100] Field
• Spin dynamics and magnetic order in magnetically frustrated Tb2Sn2O7
• Direct evidence for a dynamical ground state in the highly frustrated Tb${}_2$Sn${}_2$O${}_7$ pyrochlore
• Propagation and Ghosts in the Classical Kagome Antiferromagnet
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Cited by in corpus (4)

• Incipient Ferromagnetism in Tb2Ge2O7: Application of Chemical Pressure to the Enigmatic Spin Liquid, Tb2Ti2O7
• Calculation of the Expected Zero Field Muon Relaxation Rate in the Geometrically Frustrated Rare Earth Pyrochlore Gd2Sn2O7 Antiferromagnet
• Quantum order by disorder in a semiclassical spin ice
• Spin dynamics of the director state in frustrated hyperkagome systems