Yb2Sn2O7: A magnetic Coulomb liquid at a quantum critical point

Z. L. Dun; E. S. Choi; H. D. Zhou; A. M. Hallas; H. J. Silverstein; Y. Qiu; J. R.D. Copley; J. S. Gardner; C. R. Wiebe

doi:10.1103/PhysRevB.87.134408

Yb₂Sn₂O₇: A magnetic Coulomb liquid at a quantum critical point

Z. L. Dun, E. S. Choi, H. D. Zhou, A. M. Hallas, H. J. Silverstein, Y. Qiu, J. R.D. Copley, J. S. Gardner, C. R. Wiebe

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27 Scopus citations

Abstract

We report neutron scattering and ac susceptibility measurements on the pyrochlore Yb₂Sn₂O₇. The appearance of magnetic diffuse scattering, low-energy spin excitations, and a nearly temperature-independent relaxation time are signatures that the system enters a short-range-ordered regime with quantum dynamics beneath 2 K. ac susceptibility data further suggest that Yb₂Sn₂O₇ enters a long-range magnetically ordered state below 0.11 K. These results suggest that Yb₂Sn₂O₇ is a ferromagnet with persistent spin dynamics down to 0.05 K. Referencing the phase diagram for Yb pyrochlores, Yb₂Sn₂O₇ is approaching a quantum phase transition near the ferromagnetic ordered critical point.

Original language	English
Article number	134408
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	87
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.87.134408
State	Published - Apr 10 2013
Externally published	Yes

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title = "Yb2Sn2O7: A magnetic Coulomb liquid at a quantum critical point",

abstract = "We report neutron scattering and ac susceptibility measurements on the pyrochlore Yb2Sn2O7. The appearance of magnetic diffuse scattering, low-energy spin excitations, and a nearly temperature-independent relaxation time are signatures that the system enters a short-range-ordered regime with quantum dynamics beneath 2 K. ac susceptibility data further suggest that Yb2Sn2O7 enters a long-range magnetically ordered state below 0.11 K. These results suggest that Yb2Sn2O7 is a ferromagnet with persistent spin dynamics down to 0.05 K. Referencing the phase diagram for Yb pyrochlores, Yb2Sn2O7 is approaching a quantum phase transition near the ferromagnetic ordered critical point.",

author = "Dun, {Z. L.} and Choi, {E. S.} and Zhou, {H. D.} and Hallas, {A. M.} and Silverstein, {H. J.} and Y. Qiu and Copley, {J. R.D.} and Gardner, {J. S.} and Wiebe, {C. R.}",

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doi = "10.1103/PhysRevB.87.134408",

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TY - JOUR

T1 - Yb2Sn2O7

T2 - A magnetic Coulomb liquid at a quantum critical point

AU - Dun, Z. L.

AU - Choi, E. S.

AU - Zhou, H. D.

AU - Hallas, A. M.

AU - Silverstein, H. J.

AU - Qiu, Y.

AU - Copley, J. R.D.

AU - Gardner, J. S.

AU - Wiebe, C. R.

PY - 2013/4/10

Y1 - 2013/4/10

N2 - We report neutron scattering and ac susceptibility measurements on the pyrochlore Yb2Sn2O7. The appearance of magnetic diffuse scattering, low-energy spin excitations, and a nearly temperature-independent relaxation time are signatures that the system enters a short-range-ordered regime with quantum dynamics beneath 2 K. ac susceptibility data further suggest that Yb2Sn2O7 enters a long-range magnetically ordered state below 0.11 K. These results suggest that Yb2Sn2O7 is a ferromagnet with persistent spin dynamics down to 0.05 K. Referencing the phase diagram for Yb pyrochlores, Yb2Sn2O7 is approaching a quantum phase transition near the ferromagnetic ordered critical point.

AB - We report neutron scattering and ac susceptibility measurements on the pyrochlore Yb2Sn2O7. The appearance of magnetic diffuse scattering, low-energy spin excitations, and a nearly temperature-independent relaxation time are signatures that the system enters a short-range-ordered regime with quantum dynamics beneath 2 K. ac susceptibility data further suggest that Yb2Sn2O7 enters a long-range magnetically ordered state below 0.11 K. These results suggest that Yb2Sn2O7 is a ferromagnet with persistent spin dynamics down to 0.05 K. Referencing the phase diagram for Yb pyrochlores, Yb2Sn2O7 is approaching a quantum phase transition near the ferromagnetic ordered critical point.

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U2 - 10.1103/PhysRevB.87.134408

DO - 10.1103/PhysRevB.87.134408

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ER -

Yb₂Sn₂O₇: A magnetic Coulomb liquid at a quantum critical point

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