Spin-spin correlations in Yb2Ti2O7: A polarized neutron scattering study

J. S. Gardner; G. Ehlers; N. Rosov; R. W. Erwin; C. Petrovic

doi:10.1103/PhysRevB.70.180404

Spin-spin correlations in Yb₂Ti₂O₇: A polarized neutron scattering study

J. S. Gardner, G. Ehlers, N. Rosov, R. W. Erwin, C. Petrovic

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69 Scopus citations

Abstract

Polarized neutron diffraction and neutron spin echo have been employed to investigate the low-temperature (T<2 K) magnetic correlations in the frustrated magnet Yb₂Ti₂O₇. Several studies have reported a phase transition at 240 mK, however, the low-temperature phase is still under debate. It has been reported that Yb₂Ti ₂O₇ enters a frozen ferromagnetic phase, however, studies of the spin dynamics suggest otherwise. Our results conclusively rule out a frozen ferromagnetic state and confirm that the majority of the spin system continues to fluctuate below 240 mK.

Original language	English
Article number	180404
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	70
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.70.180404
State	Published - Nov 2004
Externally published	Yes

Funding

We would like to thank K. O’Donovan, G. Granroth, and A. S. Wills for fruitful discussions. Work at Brookhaven National Laboratory is supported by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886. This work was also supported by the Spallation Neutron Source Project (SNS), which is managed by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 for the U.S. Department of Energy. This work utilized facilities at NIST that are supported in part by the National Science Foundation under Agreement No. DMR-0086210.

Funders	Funder number
National Science Foundation
U.S. Department of Energy

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10.1103/PhysRevB.70.180404

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abstract = "Polarized neutron diffraction and neutron spin echo have been employed to investigate the low-temperature (T<2 K) magnetic correlations in the frustrated magnet Yb2Ti2O7. Several studies have reported a phase transition at 240 mK, however, the low-temperature phase is still under debate. It has been reported that Yb2Ti 2O7 enters a frozen ferromagnetic phase, however, studies of the spin dynamics suggest otherwise. Our results conclusively rule out a frozen ferromagnetic state and confirm that the majority of the spin system continues to fluctuate below 240 mK.",

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AU - Petrovic, C.

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Spin-spin correlations in Yb₂Ti₂O₇: A polarized neutron scattering study

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