Thermoelectric effects in Kagome Magnet TmMn<sub>6</sub>Sn<sub>6-x</sub>Ga<sub>x</sub>

ORAL

Abstract

Kagome magnets RMn6Sn6 (R = rare earth elements), where the Mn atoms form the Kagome layer, host distinct nontrivial electronic states and rich magnetic textures. Thermoelectric measurements have been a powerful tool to probe novel quantum states in these materials. In this study, we report the Nernst effect measurements in Ga-doped Kagome magnet series TmMn6Sn6-xGax, where x = 2.8 and 4.5. We observed an Anomalous Nernst effect, along with a strong exchange-biased behavior reflected by asymmetric hysteresis loops, suggesting the coexistence of multiple magnetic orders in the system. We also explore the influence of Ga-doping levels on the thermoelectric properties of these compounds.

*The thermoelectric measurement at the University of Michigan is supported by the National Science Foundation under Award No.DMR-2317618. The magnetization measurements at the University of Michigan are supported by the Department of Energy under Award No. DE-SC0020184. Nirmal Ghimire and Mohamed El Gazzah acknowledge the support from the NSF CAREER award DMR-2343536 (crystal growth).

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Presenters

  • Yuan Zhu

    • University of Michigan

Authors

  • Yuan Zhu

    • University of Michigan

  • Guoxin Zheng

    • University of Michigan

  • Dechen Zhang

    • University of Michigan

  • Kuan-Wen Chen

    • University of Michigan

  • Kaila G Jenkins

    • University of Michigan

  • Aaron Chan

    • University of Michigan

  • Mohamed E Gazzah

    • University of Notre Dame, Stavropoulos Center for Complex Quantum Matter
    • University of Notre Dame

  • Nirmal J Ghimire

    • University of Notre Dame, Stavropoulos Center for Complex Quantum Matter
    • Department of Physics and Astronomy, Stavropoulos Center for Complex Quantum Matter, University of Notre Dame
    • University of Notre Dame
    • Department of Physics and Astronomy, University of Notre Dame; Stavropoulos Centre for Complex Quantum Matter, University of Notre Dame

  • Lu Li

    • University of Michigan