Low-frequency spin dynamics in the XY quantum spin ice Yb2Pt2 O7

S. K. Takahashi; A. Arsenault; C. Mauws; A. M. Hallas; C. Sarkis; K. A. Ross; C. R. Wiebe; M. Tachibana; G. M. Luke; T. Imai

doi:10.1103/PhysRevB.98.104425

Low-frequency spin dynamics in the XY quantum spin ice Yb2Pt2 O7

S. K. Takahashi, A. Arsenault, C. Mauws, A. M. Hallas, C. Sarkis, K. A. Ross, C. R. Wiebe, M. Tachibana, G. M. Luke, T. Imai

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1 Scopus citations

Abstract

The XY pyrochlore Yb2Ti2O7, with pseudospin-1/2 at the Yb3+ site, has been celebrated as a potential host for the quantum spin ice state. The substitution of nonmagnetic Ti with Pt gives Yb2Pt2O7, a system with remarkably similar magnetic properties. The large nuclear gyromagnetic ratio (γn/2π=9.15 MHz/T) of Pt195 makes Yb2Pt2O7 an ideal material for NMR investigation of its unconventional magnetic properties. Based on the Pt195 nuclear spin-lattice relaxation rate 1/T1 and the magnetic specific heat Cp measured in a broad range of magnetic field Bext, we demonstrate that the field-induced magnon gap linearly decreases with Bext but an additional low-energy mode of spin excitations emerges below ∼0.5 T.

Original language	English
Article number	104425
Journal	Physical Review B
Volume	98
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.98.104425
State	Published - Sep 24 2018
Externally published	Yes

Funding

T.I. and G.M.L. were supported by NSERC and CIFAR. C.R.W. was supported by NSERC (DG and CRC Tier II), CIFAR, and CFI. We created Figs. 1(a) and 1(b) of the crystal structure with vesta [40] .

Funders	Funder number
Canadian Institute for Advanced Research
Natural Sciences and Engineering Research Council of Canada
Canada Foundation for Innovation
Japan Society for the Promotion of Science	18H01163

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10.1103/PhysRevB.98.104425

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title = "Low-frequency spin dynamics in the XY quantum spin ice Yb2Pt2 O7",

abstract = "The XY pyrochlore Yb2Ti2O7, with pseudospin-1/2 at the Yb3+ site, has been celebrated as a potential host for the quantum spin ice state. The substitution of nonmagnetic Ti with Pt gives Yb2Pt2O7, a system with remarkably similar magnetic properties. The large nuclear gyromagnetic ratio (γn/2π=9.15 MHz/T) of Pt195 makes Yb2Pt2O7 an ideal material for NMR investigation of its unconventional magnetic properties. Based on the Pt195 nuclear spin-lattice relaxation rate 1/T1 and the magnetic specific heat Cp measured in a broad range of magnetic field Bext, we demonstrate that the field-induced magnon gap linearly decreases with Bext but an additional low-energy mode of spin excitations emerges below ∼0.5 T.",

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AU - Takahashi, S. K.

AU - Arsenault, A.

AU - Mauws, C.

AU - Hallas, A. M.

AU - Sarkis, C.

AU - Ross, K. A.

AU - Wiebe, C. R.

AU - Tachibana, M.

AU - Luke, G. M.

AU - Imai, T.

PY - 2018/9/24

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AB - The XY pyrochlore Yb2Ti2O7, with pseudospin-1/2 at the Yb3+ site, has been celebrated as a potential host for the quantum spin ice state. The substitution of nonmagnetic Ti with Pt gives Yb2Pt2O7, a system with remarkably similar magnetic properties. The large nuclear gyromagnetic ratio (γn/2π=9.15 MHz/T) of Pt195 makes Yb2Pt2O7 an ideal material for NMR investigation of its unconventional magnetic properties. Based on the Pt195 nuclear spin-lattice relaxation rate 1/T1 and the magnetic specific heat Cp measured in a broad range of magnetic field Bext, we demonstrate that the field-induced magnon gap linearly decreases with Bext but an additional low-energy mode of spin excitations emerges below ∼0.5 T.

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Low-frequency spin dynamics in the XY quantum spin ice Yb2Pt2 O7

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