TY - JOUR
T1 - Magnetism on ideal triangular lattices in NaBaYb(B O3)2
AU - Guo, Shu
AU - Ghasemi, A.
AU - Broholm, C. L.
AU - Cava, R. J.
N1 - Funding Information:
This work was supported as part of the Institute for Quantum Matter, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award No. DE-SC0019331.
Funding Information:
This work was supported as part of the Institute for Quantum Matter, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award No. DE-SC0019331.
Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/9/10
Y1 - 2019/9/10
N2 - We report the anisotropic magnetic properties of single crystals of the triangular lattice magnet NaBaYb(BO3)2. In this material, a layered [Yb(BO3)2]∞ framework is sandwiched by Na+ or Ba2+ layers in alternation. The space group is centrosymmetric, R3̄m, with no detectable disorder and Yb3+-based easy axis Kramers doublets forming layered triangular lattice planes. A specific-heat anomaly indicates a second-order phase transition at T=0.41(2)K that is suppressed to less than 0.15 K in a 0.1-T magnetic field. With a change in entropy of only 0.6(2)% of Rln2 at this transition, NaBaYb(BO3)2, however, retains 94(1)% of Rln2 entropy to the lowest temperature accessed (T=0.15K). Strong frustration and the potential for quantum magnetism are implied.
AB - We report the anisotropic magnetic properties of single crystals of the triangular lattice magnet NaBaYb(BO3)2. In this material, a layered [Yb(BO3)2]∞ framework is sandwiched by Na+ or Ba2+ layers in alternation. The space group is centrosymmetric, R3̄m, with no detectable disorder and Yb3+-based easy axis Kramers doublets forming layered triangular lattice planes. A specific-heat anomaly indicates a second-order phase transition at T=0.41(2)K that is suppressed to less than 0.15 K in a 0.1-T magnetic field. With a change in entropy of only 0.6(2)% of Rln2 at this transition, NaBaYb(BO3)2, however, retains 94(1)% of Rln2 entropy to the lowest temperature accessed (T=0.15K). Strong frustration and the potential for quantum magnetism are implied.
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U2 - 10.1103/PhysRevMaterials.3.094404
DO - 10.1103/PhysRevMaterials.3.094404
M3 - Article
AN - SCOPUS:85072604822
SN - 2475-9953
VL - 3
JO - Physical Review Materials
JF - Physical Review Materials
IS - 9
M1 - 094404
ER -