Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/103378
Title: Field evolution of the spin-liquid candidate YbMgGa O4
Authors: Bachus, S.
Iakovlev, I. A.
Li, Y.
Wörl, A.
Tokiwa, Y.
Ling, L.
Zhang, Q.
Mazurenko, V. V.
Gegenwart, P.
Tsirlin, A. A.
Issue Date: 2020
Publisher: American Physical Society
Citation: Field evolution of the spin-liquid candidate YbMgGa O4 / S. Bachus, I. A. Iakovlev, Y. Li, et al. — DOI 10.1103/PhysRevB.102.104433 // Physical Review B. — 2020. — Vol. 102. — Iss. 10. — 104433.
Abstract: We report magnetization, heat capacity, thermal expansion, and magnetostriction measurements down to millikelvin temperatures on the triangular antiferromagnet YbMgGaO4. Our data exclude the formation of the distinct 13 plateau phase observed in other triangular antiferromagnets, but reveal plateaulike features in second derivatives of the free energy, magnetic susceptibility, and specific heat, at μ0H=1.0-2.5 T for H∥c and 2-5 T for H⊥c. Using Monte Carlo simulations of a realistic spin Hamiltonian, we ascribe these features to nonmonotonic changes in the magnetization and the 12 plateau that is smeared out by the random distribution of exchange couplings in YbMgGaO4. © 2020 American Physical Society.
Keywords: ANTIFERROMAGNETIC MATERIALS
FREE ENERGY
GALLIUM ALLOYS
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MONTE CARLO METHODS
SPECIFIC HEAT
TERNARY ALLOYS
THERMAL EXPANSION
YTTERBIUM ALLOYS
ANTIFERROMAGNETS
FIELD EVOLUTION
MAGNETOSTRICTION MEASUREMENTS
MILLIKELVIN TEMPERATURES
NONMONOTONIC CHANGES
RANDOM DISTRIBUTION
SECOND DERIVATIVES
SPIN HAMILTONIAN
MAGNESIUM ALLOYS
URI: http://hdl.handle.net/10995/103378
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85094151588
PURE ID: 14173447
ISSN: 24699950
DOI: 10.1103/PhysRevB.102.104433
metadata.dc.description.sponsorship: We would like to thank Yaroslav Kvashnin for technical assistance with the UppASD package. The work in Augsburg was supported by German Research Foundation Project No. 107745057 (TRR80) and by the Federal Ministry for Education and Research through the Sofja Kovalevkaya Award of the Alexander von Humboldt Foundation (A.A.T.). The work of I.A.I. and V.V.M. was supported by Russian Science Foundation Grant No. 18-12-00185. Q.M.Z. was supported by the National Key Research and Development Program of China (2017YFA0302904 and 2016YFA0300500) and the NSF of China (11774419 and U1932215).
RSCF project card: 18-12-00185
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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