Neutron Scattering Study in Breathing Pyrochlore Antiferromagnet Ba3Yb2Zn5O11

T. Haku, M. Soda, M. Sera, K. Kimura, J. Taylor, S. Itoh, T. Yokoo, Y. Matsumoto, D. Yu, R. A. Mole, T. Takeuchi, S. Nakatsuji, Y. Kono, T. Sakakibara, L. J. Chang, T. Masuda

Research output: Contribution to journalConference article

Abstract

Inelastic neutron scattering (INS) study on breathing pyrochlore antiferromagnet Ba3Yb2Zn5O11 is presented. Observed crystalline electric field (CEF) excitations are explained by a Hamiltonian of Kramers ion Yb3+ of which the local symmetry exhibits C3v point group symmetry. The magnetic susceptibility is consistently reproduced by the energy scheme of the CEF excitations. The INS spectra in the low-energy range are quantitatively explained by spin-1/2 single-tetrahedron model having XXZ anisotropy and Dzyaloshinskii-Moriya interaction. This model has a two-fold degeneracy of the lowest-energy state per tetrahedron and well reproduces the bulk properties at T ≥ 0.5K. At lower temperatures, however, we observe a broad maximum in the heat capacity around 63 mK, demonstrating that a unique quantum ground state is selected due to extra perturbations.

Original languageEnglish
Article number012018
JournalJournal of Physics: Conference Series
Volume828
Issue number1
DOIs
Publication statusPublished - 2017 Apr 20
Event8th International Conference on Highly Frustrated Magnetism 2016, HFM 2016 - Taipei, Taiwan
Duration: 2016 Sep 72016 Sep 11

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breathing
neutron scattering
tetrahedrons
inelastic scattering
electric fields
symmetry
excitation
energy
specific heat
magnetic permeability
perturbation
anisotropy
ground state
ions
interactions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Haku, T., Soda, M., Sera, M., Kimura, K., Taylor, J., Itoh, S., ... Masuda, T. (2017). Neutron Scattering Study in Breathing Pyrochlore Antiferromagnet Ba3Yb2Zn5O11. Journal of Physics: Conference Series, 828(1), [012018]. https://doi.org/10.1088/1742-6596/828/1/012018
Haku, T. ; Soda, M. ; Sera, M. ; Kimura, K. ; Taylor, J. ; Itoh, S. ; Yokoo, T. ; Matsumoto, Y. ; Yu, D. ; Mole, R. A. ; Takeuchi, T. ; Nakatsuji, S. ; Kono, Y. ; Sakakibara, T. ; Chang, L. J. ; Masuda, T. / Neutron Scattering Study in Breathing Pyrochlore Antiferromagnet Ba3Yb2Zn5O11. In: Journal of Physics: Conference Series. 2017 ; Vol. 828, No. 1.
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abstract = "Inelastic neutron scattering (INS) study on breathing pyrochlore antiferromagnet Ba3Yb2Zn5O11 is presented. Observed crystalline electric field (CEF) excitations are explained by a Hamiltonian of Kramers ion Yb3+ of which the local symmetry exhibits C3v point group symmetry. The magnetic susceptibility is consistently reproduced by the energy scheme of the CEF excitations. The INS spectra in the low-energy range are quantitatively explained by spin-1/2 single-tetrahedron model having XXZ anisotropy and Dzyaloshinskii-Moriya interaction. This model has a two-fold degeneracy of the lowest-energy state per tetrahedron and well reproduces the bulk properties at T ≥ 0.5K. At lower temperatures, however, we observe a broad maximum in the heat capacity around 63 mK, demonstrating that a unique quantum ground state is selected due to extra perturbations.",
author = "T. Haku and M. Soda and M. Sera and K. Kimura and J. Taylor and S. Itoh and T. Yokoo and Y. Matsumoto and D. Yu and Mole, {R. A.} and T. Takeuchi and S. Nakatsuji and Y. Kono and T. Sakakibara and Chang, {L. J.} and T. Masuda",
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Haku, T, Soda, M, Sera, M, Kimura, K, Taylor, J, Itoh, S, Yokoo, T, Matsumoto, Y, Yu, D, Mole, RA, Takeuchi, T, Nakatsuji, S, Kono, Y, Sakakibara, T, Chang, LJ & Masuda, T 2017, 'Neutron Scattering Study in Breathing Pyrochlore Antiferromagnet Ba3Yb2Zn5O11', Journal of Physics: Conference Series, vol. 828, no. 1, 012018. https://doi.org/10.1088/1742-6596/828/1/012018

Neutron Scattering Study in Breathing Pyrochlore Antiferromagnet Ba3Yb2Zn5O11. / Haku, T.; Soda, M.; Sera, M.; Kimura, K.; Taylor, J.; Itoh, S.; Yokoo, T.; Matsumoto, Y.; Yu, D.; Mole, R. A.; Takeuchi, T.; Nakatsuji, S.; Kono, Y.; Sakakibara, T.; Chang, L. J.; Masuda, T.

In: Journal of Physics: Conference Series, Vol. 828, No. 1, 012018, 20.04.2017.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Neutron Scattering Study in Breathing Pyrochlore Antiferromagnet Ba3Yb2Zn5O11

AU - Haku, T.

AU - Soda, M.

AU - Sera, M.

AU - Kimura, K.

AU - Taylor, J.

AU - Itoh, S.

AU - Yokoo, T.

AU - Matsumoto, Y.

AU - Yu, D.

AU - Mole, R. A.

AU - Takeuchi, T.

AU - Nakatsuji, S.

AU - Kono, Y.

AU - Sakakibara, T.

AU - Chang, L. J.

AU - Masuda, T.

PY - 2017/4/20

Y1 - 2017/4/20

N2 - Inelastic neutron scattering (INS) study on breathing pyrochlore antiferromagnet Ba3Yb2Zn5O11 is presented. Observed crystalline electric field (CEF) excitations are explained by a Hamiltonian of Kramers ion Yb3+ of which the local symmetry exhibits C3v point group symmetry. The magnetic susceptibility is consistently reproduced by the energy scheme of the CEF excitations. The INS spectra in the low-energy range are quantitatively explained by spin-1/2 single-tetrahedron model having XXZ anisotropy and Dzyaloshinskii-Moriya interaction. This model has a two-fold degeneracy of the lowest-energy state per tetrahedron and well reproduces the bulk properties at T ≥ 0.5K. At lower temperatures, however, we observe a broad maximum in the heat capacity around 63 mK, demonstrating that a unique quantum ground state is selected due to extra perturbations.

AB - Inelastic neutron scattering (INS) study on breathing pyrochlore antiferromagnet Ba3Yb2Zn5O11 is presented. Observed crystalline electric field (CEF) excitations are explained by a Hamiltonian of Kramers ion Yb3+ of which the local symmetry exhibits C3v point group symmetry. The magnetic susceptibility is consistently reproduced by the energy scheme of the CEF excitations. The INS spectra in the low-energy range are quantitatively explained by spin-1/2 single-tetrahedron model having XXZ anisotropy and Dzyaloshinskii-Moriya interaction. This model has a two-fold degeneracy of the lowest-energy state per tetrahedron and well reproduces the bulk properties at T ≥ 0.5K. At lower temperatures, however, we observe a broad maximum in the heat capacity around 63 mK, demonstrating that a unique quantum ground state is selected due to extra perturbations.

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