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Magnetoresistance and anomalous Hall effect in micro-ribbons of the magnetic Weyl semimetal Co3Sn2S2

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2019

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Geishendorf, Kevin
Schlitz, Richard
Vir, Praveen
Shekhar, Chandra
Felser, Claudia
Nielsch, Kornelius
Thomas, Andy

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https://doi.org/10.1063/1.5086500
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http://arxiv.org/abs/1812.09983

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Applied Physics Letters. American Institute of Physics (AIP). 2019, 114(9), 092403. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.5086500

Zusammenfassung

Magnetic Weyl semimetals exhibit intriguing transport phenomena due to their non-trivial band structure. Recent experiments in bulk crystals of the shandite-type Co3Sn2S2 have shown that this material system is a magnetic Weyl semimetal. To access the length scales relevant for chiral transport, it is mandatory to fabricate microstructures of this fascinating compound. We therefore have cut micro-ribbons (typical size 0.3 X 3 X 50 μm3) from Co3Sn2S2 single crystals using a focused beam of Ga2+-ions and investigated the impact of the sample dimensions and possible surface doping on the magnetotransport properties. The large intrinsic anomalous Hall effect observed in the micro-ribbons is quantitatively consistent with the one in bulk samples. Our results show that focused ion beam cutting can be used for nano-patterning single crystalline Co3Sn2S2, enabling future transport experiments in complex microstructures of this Weyl semimetal.

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ISO 690GEISHENDORF, Kevin, Richard SCHLITZ, Praveen VIR, Chandra SHEKHAR, Claudia FELSER, Kornelius NIELSCH, Sebastian T. B. GOENNENWEIN, Andy THOMAS, 2019. Magnetoresistance and anomalous Hall effect in micro-ribbons of the magnetic Weyl semimetal Co3Sn2S2. In: Applied Physics Letters. American Institute of Physics (AIP). 2019, 114(9), 092403. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.5086500
BibTex
@article{Geishendorf2019Magne-51831,
  year={2019},
  doi={10.1063/1.5086500},
  title={Magnetoresistance and anomalous Hall effect in micro-ribbons of the magnetic Weyl semimetal Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub>},
  number={9},
  volume={114},
  issn={0003-6951},
  journal={Applied Physics Letters},
  author={Geishendorf, Kevin and Schlitz, Richard and Vir, Praveen and Shekhar, Chandra and Felser, Claudia and Nielsch, Kornelius and Goennenwein, Sebastian T. B. and Thomas, Andy},
  note={Article Number: 092403}
}
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