Dynamical ground state in the XY pyrochlore Yb2GaSbO7

Sarte, P. M.; Cruz-Kan, K.; Ortiz, B. R.; Hong, K. H.; Bordelon, M. M.; Reig-i-Plessis, D.; Lee, M.; Choi, E. S.; Stone, M. B.; Calder, S.; Pajerowski, D. M.; Mangin-Thro, L.; Qiu, Y.; Attfield, J. P.; Wilson, S. D.; Stock, C.; Zhou, H. D.; Hallas, A. M.; Paddison, J. A. M.; Aczel, A. A.; Wiebe, C. R.

doi:10.1038/s41535-021-00343-4

Dynamical ground state in the XY pyrochlore Yb2GaSbO7

Journal Article · Wed May 05 00:00:00 EDT 2021 · npj Quantum Materials

DOI:https://doi.org/10.1038/s41535-021-00343-4· OSTI ID:1781873

Sarte, P. M.; Cruz-Kan, K.; Ortiz, B. R.; Hong, K. H.; Bordelon, M. M.; ; ; Choi, E. S.; ; ; Pajerowski, D. M.; ; ; ; ; Stock, C.; Zhou, H. D.; Hallas, A. M.; Paddison, J. A. M.; more »

Abstract

The magnetic ground state of the pyrochlore Yb ₂ GaSbO ₇ has not been established. The persistent spin fluctuations observed by muon spin-relaxation measurements at low temperatures have not been adequately explained for this material using existing theories for quantum magnetism. Here we report on the synthesis and characterisation of Yb ₂ GaSbO ₇ to revisit the nature of the magnetic ground state. Through DC and AC magnetic susceptibility, heat capacity, and neutron scattering experiments, we observe evidence for a dynamical ground state that makes Yb ₂ GaSbO ₇ a promising candidate for disorder-induced spin-liquid or spin-singlet behaviour. This state is quite fragile, being tuned to a splayed ferromagnet in a modest magnetic field μ ₀ H _c ~ 1.5 T.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of California, Santa Barbara, CA (United States)

Sponsoring Organization:: National Science Foundation Graduate Research Fellowship Programme; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division

Grant/Contract Number:: AC05-00OR22725; SC0017752

OSTI ID:: 1781873

Alternate ID(s):: OSTI ID: 1782246
OSTI ID: 1798603

Journal Information:: npj Quantum Materials, Journal Name: npj Quantum Materials Journal Issue: 1 Vol. 6; ISSN 2397-4648

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United Kingdom

Language:: English

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