Dynamical splayed ferromagnetic ground state in the quantum spin ice Yb(2)Sn(2)O(7).
- Yaouanc A Institut Nanosciences et Cryogénie, SPSMS, CEA and Université Joseph Fourier, F-38054 Grenoble, France.
- Dalmas de Réotier P Institut Nanosciences et Cryogénie, SPSMS, CEA and Université Joseph Fourier, F-38054 Grenoble, France.
- Bonville P CEA/DSM, Institut Rayonnement Matière de Saclay, SPEC, 91191 Gif-sur-Yvette, France.
- Hodges JA CEA/DSM, Institut Rayonnement Matière de Saclay, SPEC, 91191 Gif-sur-Yvette, France.
- Glazkov V Institut Nanosciences et Cryogénie, SPSMS, CEA and Université Joseph Fourier, F-38054 Grenoble, France and P.L. Kapitza Institute for Physical Problems, RAS, 119334 Moscow, Russia.
- Keller L Laboratory for Neutron Scattering, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland.
- Sikolenko V Laboratory for Neutron Scattering, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland.
- Bartkowiak M Laboratory for Developments and Methods, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland.
- Amato A Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland.
- Baines C Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland.
- King PJ Rutherford Appleton Laboratory, ISIS Facility, Chilton OX11 0QX, United Kingdom.
- Gubbens PC FAME, R3, Applied Sciences, Delft University of Technology, 2629JB Delft, The Netherlands.
- Forget A CEA/DSM, Institut Rayonnement Matière de Saclay, SPEC, 91191 Gif-sur-Yvette, France.
- 2014-08-29
Published in:
- Physical review letters. - 2013
English
From magnetic, specific heat, (170)Yb Mössbauer effect, neutron diffraction, and muon spin relaxation measurements on polycrystalline Yb(2)Sn(2)O(7), we show that below the first order transition at 0.15 K all of the Yb(3+) ions are long-range magnetically ordered and each has a moment of 1.1 μ(B) which lies at ≃ 10° to a common fourfold cubic axis. The four sublattice moments have four different directions away from this axis and are therefore noncoplanar. We term this arrangement splayed ferromagnetism. This ground state has a dynamical component with a fluctuation rate in the megahertz range. The net ferromagnetic exchange interaction has an anisotropy that favors the local threefold axis. We discuss our results in terms of the phase diagram proposed by Savary and Balents [Phys. Rev. Lett. 108, 037202 (2012)] for a pyrochlore lattice of Kramers 1/2 effective spins.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.110.127207
- PMID 25166842
- Persistent URL
- https://sonar.ch/global/documents/278274
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