Possible gapless spin liquid in a rare-earth kagome lattice magnets Tm<sub>3</sub>Sb<sub>3</sub>Zn<sub>2</sub>O<sub>14</sub>

ORAL

Abstract

We report the thermodynamic and muon spin relaxation (μSR) evidences for a possible gapless spin liquid in Tm3Sb3Zn2O14, with the rare-earth ions Tm3+ forming a two-dimensional kagome lattice. We extract the magnetic specific heat of Tm3Sb3Zn2O14 by subtracting the phonon contribution of the non-magnetic isostructural material La3Sb3Zn2O14 and obtain a clear linear-T temperature dependence of magnetic specific heat at low temperatures. The absence of magnetic order is confirmed by specific heat, A.C. susceptibility and μSR measurements down to 20 mK. We find that the spin-lattice relaxation time remains constant down to the lowest temperature. The possibility of disorder induced effect could not be excluded duo to the possible Tm/Zn site-mixing disorder in Tm3Sb3Zn2O14.

*The National Key Research and Development Program of China Nos.2016YFA0300503 and 2016YFA0301001,
the start-up fund and the first-class university construction fund of Fudan University,
the thousand-youth-talent program of China,
the National Natural Science Foundation of China: No.11474060 and No.11774061.

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Presenters

  • Zhaofeng Ding

    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
    • Fudan University
    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China.

Authors

  • Zhaofeng Ding

    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
    • Fudan University
    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China.

  • Yanxing Yang

    • Fudan University
    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China.

  • Jian Zhang

    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
    • Fudan University
    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China.

  • Cheng Tan

    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
    • Fudan University
    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China.

  • Zihao Zhu

    • Fudan University
    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China.

  • Gang Chen

    • Fudan University
    • Department of Physics, Fudan University

  • Lei Shu

    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
    • Fudan University
    • Physics, Fudan University
    • State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China.