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Wen JJ, Koohpayeh SM, Ross KA, et al. Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr_{2}Zr_{2}O_{7}. Phys Rev Lett. 2017;118(10):107206doi: 10.1103/PhysRevLett.118.107206.
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., & Broholm, C. L. (2017). Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr_{2}Zr_{2}O_{7}. Physical review letters, 118(10), 107206. https://doi.org/10.1103/PhysRevLett.118.107206
Wen, J-J, et al. "Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr_{2}Zr_{2}O_{7}." Physical review letters vol. 118,10 (2017): 107206. doi: https://doi.org/10.1103/PhysRevLett.118.107206
Wen JJ, Koohpayeh SM, Ross KA, Trump BA, McQueen TM, Kimura K, Nakatsuji S, Qiu Y, Pajerowski DM, Copley JR, Broholm CL. Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr_{2}Zr_{2}O_{7}. Phys Rev Lett. 2017 Mar 10;118(10):107206. doi: 10.1103/PhysRevLett.118.107206. Epub 2017 Mar 08. PMID: 28339241.
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Phys Rev Lett. 2017 Mar 10;118(10):107206. doi: 10.1103/PhysRevLett.118.107206. Epub 2017 Mar 08.

Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr_{2}Zr_{2}O_{7}.

Physical review letters

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

Affiliations

  1. Institute for Quantum Matter and Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218, USA.
  2. Department of Applied Physics, Stanford University, Stanford, California 94305, USA.
  3. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
  4. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
  5. Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218, USA.
  6. Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA.
  7. Institute for Solid State Physics (ISSP), University of Tokyo, Kashiwa, Chiba 277-8581, Japan.
  8. Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
  9. CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan.

PMID: 28339241 DOI: 10.1103/PhysRevLett.118.107206

Abstract

Inelastic neutron scattering reveals a broad continuum of excitations in Pr_{2}Zr_{2}O_{7}, the temperature and magnetic field dependence of which indicate a continuous distribution of quenched transverse fields (Δ) acting on the non-Kramers Pr^{3+} 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)∝(Δ^{2}+Γ^{2})^{-1}, where Γ=0.27(1)  meV. Established during high temperature synthesis due to an underlying structural instability, it appears disorder in Pr_{2}Zr_{2}O_{7} actually induces a quantum spin liquid.

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