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Quantum Spin Ice Dynamics in the Dipole-Octupole Pyrochlore Magnet Ce2Zr2O7

Published

Author(s)

Jonathan Gaudet, E. M. Smith, J. Dudemaine, J. Beare, C.R.C. Buhariwalla, Nicholas Butch, M. B. Stone, A. I. Kolesniko, Guangyong Xu, D. R. Yahne, K. A. Ross, C. A. Marjerrison, J. D. Garrett, G. M. Luke, A. D. Bianchi, B. D. Gaulin

Abstract

Neutron scattering measurements on the pyrochlore magnet Ce2Zr2O7 reveal an unusual crystal field splitting of its lowest J=5/2 multiplet, such that its ground state doublet is composed of mj= ± 3/2, giving these doublets a dipole - octupole (DO) character with local Ising anisotropy. Its magnetic susceptibility shows weak antiferromagnetic correlations with θcw = 1.5 ± 0.06 K, leading to a naive expectation of an All-In, All-Out ordered state at low temperatures. Instead our low energy inelastic neutron scattering measurements show a dynamic quantum spin ice state, with suppressed scattering near Q = 0, and no long range order at low temperatures. This is consistent with recent theory predicting symmetry enriched U(1) quantum spin liquids for such DO doublets decorating the pyrochlore lattice.
Citation
Physical Review Letters
Volume
122
Issue
18

Keywords

spin ice, octupole, frustrated magnet

Citation

Gaudet, J. , Smith, E. , Dudemaine, J. , Beare, J. , Buhariwalla, C. , Butch, N. , Stone, M. , Kolesniko, A. , Xu, G. , Yahne, D. , Ross, K. , Marjerrison, C. , Garrett, J. , Luke, G. , Bianchi, A. and Gaulin, B. (2019), Quantum Spin Ice Dynamics in the Dipole-Octupole Pyrochlore Magnet Ce<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=927207 (Accessed June 21, 2024)

Issues

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Created May 6, 2019, Updated October 12, 2021