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Current-sensitive Hall effect in a chiral-orbital-current state

Author

Listed:
  • Yu Zhang

    (University of Colorado at Boulder)

  • Yifei Ni

    (University of Colorado at Boulder)

  • Pedro Schlottmann

    (Florida State University)

  • Rahul Nandkishore

    (University of Colorado at Boulder
    University of Colorado at Boulder)

  • Lance E. DeLong

    (University of Kentucky)

  • Gang Cao

    (University of Colorado at Boulder
    University of Colorado at Boulder)

Abstract

Chiral orbital currents (COC) underpin a novel colossal magnetoresistance in ferrimagnetic Mn3Si2Te6. Here we report the Hall effect in the COC state which exhibits the following unprecedented features: (1) A sharp, current-sensitive peak in the magnetic field dependence of the Hall resistivity, and (2) A current-sensitive scaling relation between the Hall conductivity σxy and the longitudinal conductivity σxx, namely, σxy ∝ σxxα with α reaching up to 5, which is exceptionally large compared to α ≤ 2 typical of all solids. The novel Hall responses along with a current-sensitive carrier density and a large Hall angle of 15% point to a giant, current-sensitive Hall effect that is unique to the COC state. Here, we show that a magnetic field induced by the fully developed COC combines with the applied magnetic field to exert the greatly enhanced transverse force on charge carriers, which dictates the COC Hall responses.

Suggested Citation

  • Yu Zhang & Yifei Ni & Pedro Schlottmann & Rahul Nandkishore & Lance E. DeLong & Gang Cao, 2024. "Current-sensitive Hall effect in a chiral-orbital-current state," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47823-2
    DOI: 10.1038/s41467-024-47823-2
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    References listed on IDEAS

    as
    1. Yu Zhang & Yifei Ni & Hengdi Zhao & Sami Hakani & Feng Ye & Lance DeLong & Itamar Kimchi & Gang Cao, 2022. "Control of chiral orbital currents in a colossal magnetoresistance material," Nature, Nature, vol. 611(7936), pages 467-472, November.
    2. Junho Seo & Chandan De & Hyunsoo Ha & Ji Eun Lee & Sungyu Park & Joonbum Park & Yurii Skourski & Eun Sang Choi & Bongjae Kim & Gil Young Cho & Han Woong Yeom & Sang-Wook Cheong & Jae Hoon Kim & Bohm-J, 2021. "Colossal angular magnetoresistance in ferrimagnetic nodal-line semiconductors," Nature, Nature, vol. 599(7886), pages 576-581, November.
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    Cited by:

    1. Yanhong Gu & Kevin A. Smith & Amartyajyoti Saha & Chandan De & Choong-jae Won & Yang Zhang & Ling-Fang Lin & Sang-Wook Cheong & Kristjan Haule & Mykhaylo Ozerov & Turan Birol & Christopher Homes & Elb, 2024. "Unconventional insulator-to-metal phase transition in Mn3Si2Te6," Nature Communications, Nature, vol. 15(1), pages 1-6, December.

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