Interplay of itinerant electrons and Ising moments in a hybrid honeycomb quantum magnet TmNi3Al9

H. Ge, C. J. Huang, Q. Zhang, N. Zhao, J. Yang, L. Wang, Y. Fu, L. Zhang, Z. M. Song, T. T. Li, F. Ding, J. B. Xu, Y. F. Zhang, X. Tong, S. M. Wang, J. W. Mei, A. Podlesnyak, L. S. Wu, Gang Chen, and J. M. Sheng
Phys. Rev. B 106, 054434 – Published 29 August 2022

Abstract

The interplay between itinerant electrons and local magnetic moments in quantum materials brings about rich and fascinating phenomena and stimulates various developments in the theoretical framework. In this work, thermodynamic, electric transport, and neutron diffraction measurements were performed on a newly synthesized honeycomb lattice magnet TmNi3Al9. Based on the experimental data, a magnetic-field–temperature phase diagram was constructed, exhibiting three essentially different magnetic regions. Below TN=2.97±0.02KTm3+, moments order antiferromagnetically in zero field. We found that the Tm3+ ions form a pseudodoublet ground state with the Ising-like moments lying normal to the two-dimensional honeycomb layers. Application of a magnetic field along the easy axis gradually suppresses the antiferromagnetic order in favor of an induced ferromagnetic state above the critical field Bc=0.92±0.05T. In the vicinity of Bc, a strong enhancement of the quantum spin fluctuations was observed. The quantum Ising nature of the local moments and the coupling to itinerant electrons are discussed.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
2 More
  • Received 20 December 2021
  • Revised 24 May 2022
  • Accepted 19 August 2022

DOI:https://doi.org/10.1103/PhysRevB.106.054434

©2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

H. Ge1, C. J. Huang2, Q. Zhang3, N. Zhao1, J. Yang4, L. Wang1,5, Y. Fu1, L. Zhang6, Z. M. Song1, T. T. Li1, F. Ding1, J. B. Xu1, Y. F. Zhang1, X. Tong7,8, S. M. Wang1, J. W. Mei1,5,9, A. Podlesnyak3, L. S. Wu1,9,*, Gang Chen2,†, and J. M. Sheng10,1,‡

  • 1Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
  • 2Department of Physics and HKU-UCAS Joint Institute for Theoretical and Computational Physics at Hong Kong, The University of Hong Kong, Hong Kong 999077, China
  • 3Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
  • 4Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
  • 5Shenzhen Institute for Quantum Science and Engineering, Shenzhen 518055, China
  • 6Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
  • 7Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 8Spallation Neutron Source Science Center, Dongguan 523803, China
  • 9Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
  • 10Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China

  • *wuls@sustech.edu.cn
  • gangchen@hku.hk
  • shengjm@sustech.edu.cn

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 106, Iss. 5 — 1 August 2022

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×