Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr2Zr2 O7

J. J. Wen; S. M. Koohpayeh; K. A. Ross; B. A. Trump; T. M. McQueen; K. Kimura; S. Nakatsuji; Y. Qiu; D. M. Pajerowski; J. R.D. Copley; C. L. Broholm

doi:10.1103/PhysRevLett.118.107206

Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr2Zr2 O7

J. J. Wen, S. M. Koohpayeh, K. A. Ross, B. A. Trump, T. M. McQueen, K. Kimura, S. Nakatsuji, Y. Qiu, D. M. Pajerowski, J. R.D. Copley, C. L. Broholm

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Abstract

Inelastic neutron scattering reveals a broad continuum of excitations in Pr2Zr2O7, the temperature and magnetic field dependence of which indicate a continuous distribution of quenched transverse fields (Δ) acting on the non-Kramers Pr3+ crystal field ground state doublets. Spin-ice correlations are apparent within 0.2 meV of the Zeeman energy. A random phase approximation provides an excellent account of the data with a transverse field distribution ρ(Δ)(Δ2+Γ2)-1, where Γ=0.27(1) meV. Established during high temperature synthesis due to an underlying structural instability, it appears disorder in Pr2Zr2O7 actually induces a quantum spin liquid.

Original language	English
Article number	107206
Journal	Physical Review Letters
Volume	118
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.118.107206
State	Published - Mar 8 2017
Externally published	Yes

Funding

The work at IQM was supported by the U.S. Department of Energy, office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Grant No. DE-FG02-08ER46544. This work is partially supported by CREST, Japan Science and Technology Agency, by Grants-in-Aid for Scientific Research (Grant No. 16H02209), by Grants-in-Aids for Scientific Research on Innovative Areas (Grants No. 15H05882, No. 15H05883) and Program for Advancing Strategic International Networks to Accelerate the Circulation of Talented Researchers (Program No. R2604) from the Japanese Society for the Promotion of Science. This work utilized facilities supported in part by the National Science Foundation under Agreement No. DMR-1508249. J.W. acknowledges the support at Stanford and SLAC by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract No. DE-AC02-76SF00515.

Funders	Funder number
National Science Foundation	DMR-1508249
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Division of Materials Sciences and Engineering	DE-FG02-08ER46544, DE-AC02-76SF00515
Japan Society for the Promotion of Science	16H02209
Japan Science and Technology Agency	R2604, 15H05883, 15H05882
Core Research for Evolutional Science and Technology

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10.1103/PhysRevLett.118.107206

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Wen, J. J., Koohpayeh, S. M., Ross, K. A., Trump, B. A., McQueen, T. M., Kimura, K., Nakatsuji, S., Qiu, Y., Pajerowski, D. M., Copley, J. R. D., & Broholm, C. L. (2017). Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr2Zr2 O7. Physical Review Letters, 118(10), Article 107206. https://doi.org/10.1103/PhysRevLett.118.107206

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title = "Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr2Zr2 O7",

abstract = "Inelastic neutron scattering reveals a broad continuum of excitations in Pr2Zr2O7, the temperature and magnetic field dependence of which indicate a continuous distribution of quenched transverse fields (Δ) acting on the non-Kramers Pr3+ crystal field ground state doublets. Spin-ice correlations are apparent within 0.2 meV of the Zeeman energy. A random phase approximation provides an excellent account of the data with a transverse field distribution ρ(Δ)(Δ2+Γ2)-1, where Γ=0.27(1) meV. Established during high temperature synthesis due to an underlying structural instability, it appears disorder in Pr2Zr2O7 actually induces a quantum spin liquid.",

author = "Wen, {J. J.} and Koohpayeh, {S. M.} and Ross, {K. A.} and Trump, {B. A.} and McQueen, {T. M.} and K. Kimura and S. Nakatsuji and Y. Qiu and Pajerowski, {D. M.} and Copley, {J. R.D.} and Broholm, {C. L.}",

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AU - Koohpayeh, S. M.

AU - Ross, K. A.

AU - Trump, B. A.

AU - McQueen, T. M.

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AU - Nakatsuji, S.

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AB - Inelastic neutron scattering reveals a broad continuum of excitations in Pr2Zr2O7, the temperature and magnetic field dependence of which indicate a continuous distribution of quenched transverse fields (Δ) acting on the non-Kramers Pr3+ crystal field ground state doublets. Spin-ice correlations are apparent within 0.2 meV of the Zeeman energy. A random phase approximation provides an excellent account of the data with a transverse field distribution ρ(Δ)(Δ2+Γ2)-1, where Γ=0.27(1) meV. Established during high temperature synthesis due to an underlying structural instability, it appears disorder in Pr2Zr2O7 actually induces a quantum spin liquid.

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Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr2Zr2 O7

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