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Kondo Holes in the Two-Dimensional Itinerant Ising Ferromagnet Fe3GeTe2

Journal Article


Abstract


  • Heavy Fermion (HF) states emerge in correlated quantum materials due to the intriguing interplay between localized magnetic moments and itinerant electrons but rarely appear in 3d-electron systems due to high itinerancy of d-electrons. Here, an anomalous enhancement of Kondo screening is observed at the Kondo hole of local Fe vacancies in Fe3GeTe2 which is a recently discovered 3d-HF system featuring Kondo lattice and two-dimensional itinerant ferromagnetism. An itinerant Kondo-Ising model is established to reproduce the experimental results and provides insight into the competition between Ising ferromagnetism and Kondo screening. Our work explains the microscopic origin of the d-electron HF states in Fe3GeTe2 and inspires future studies of the enriched quantum many-body effects with Kondo holes.

UOW Authors


  •   Zhao, Mengting (external author)
  •   Xi, Yilian (external author)
  •   Dou, Shi
  •   Du, Yi
  •   Feng, Haifeng (external author)
  •   Xu, Xun
  •   Zhou, Si (external author)

Publication Date


  • 2021

Citation


  • Zhao, M., Chen, B. B., Xi, Y., Zhao, Y., Xu, H., Zhang, H., . . . Du, Y. (2021). Kondo Holes in the Two-Dimensional Itinerant Ising Ferromagnet Fe3GeTe2. Nano Letters, 21(14), 6117-6123. doi:10.1021/acs.nanolett.1c01661

Scopus Eid


  • 2-s2.0-85111503108

Start Page


  • 6117

End Page


  • 6123

Volume


  • 21

Issue


  • 14

Abstract


  • Heavy Fermion (HF) states emerge in correlated quantum materials due to the intriguing interplay between localized magnetic moments and itinerant electrons but rarely appear in 3d-electron systems due to high itinerancy of d-electrons. Here, an anomalous enhancement of Kondo screening is observed at the Kondo hole of local Fe vacancies in Fe3GeTe2 which is a recently discovered 3d-HF system featuring Kondo lattice and two-dimensional itinerant ferromagnetism. An itinerant Kondo-Ising model is established to reproduce the experimental results and provides insight into the competition between Ising ferromagnetism and Kondo screening. Our work explains the microscopic origin of the d-electron HF states in Fe3GeTe2 and inspires future studies of the enriched quantum many-body effects with Kondo holes.

UOW Authors


  •   Zhao, Mengting (external author)
  •   Xi, Yilian (external author)
  •   Dou, Shi
  •   Du, Yi
  •   Feng, Haifeng (external author)
  •   Xu, Xun
  •   Zhou, Si (external author)

Publication Date


  • 2021

Citation


  • Zhao, M., Chen, B. B., Xi, Y., Zhao, Y., Xu, H., Zhang, H., . . . Du, Y. (2021). Kondo Holes in the Two-Dimensional Itinerant Ising Ferromagnet Fe3GeTe2. Nano Letters, 21(14), 6117-6123. doi:10.1021/acs.nanolett.1c01661

Scopus Eid


  • 2-s2.0-85111503108

Start Page


  • 6117

End Page


  • 6123

Volume


  • 21

Issue


  • 14