Origin of the quasi-quantized Hall effect in ZrTe5

Galeski, S.; Ehmcke, T.; Wawrzyńczak, R.; Lozano, P. M.; Cho, K.; Sharma, A.; Das, S.; Küster, F.; Sessi, P.; Brando, M.; Küchler, R.; Markou, A.; König, M.; Swekis, P.; Felser, C.; Sassa, Y.; Li, Q.; Gu, G.; Zimmermann, M. V.; Ivashko, O.; Gorbunov, D. I.; Zherlitsyn, S.; Förster, T.; Parkin, S. S. P.; Wosnitza, J.; Meng, T.; Gooth, J.

doi:10.1038/s41467-021-23435-y

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Origin of the quasi-quantized Hall effect in ZrTe₅

MPS-Authors

/persons/resource/persons263211

Cho, K.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons263213

Sharma, A.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons263215

Das, S.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;
International Max Planck Research School for Science and Technology of Nano-Systems, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons259915

Küster, F.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons259921

Sessi, P.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons245678

Parkin, S. S. P.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

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引用

Galeski, S., Ehmcke, T., Wawrzyńczak, R., Lozano, P. M., Cho, K., Sharma, A., Das, S., Küster, F., Sessi, P., Brando, M., Küchler, R., Markou, A., König, M., Swekis, P., Felser, C., Sassa, Y., Li, Q., Gu, G., Zimmermann, M. V., Ivashko, O., Gorbunov, D. I., Zherlitsyn, S., Förster, T., Parkin, S. S. P., Wosnitza, J., Meng, T., & Gooth, J. (2021). Origin of the quasi-quantized Hall effect in ZrTe₅. Nature Communications, 12:. doi:10.1038/s41467-021-23435-y.

引用: https://hdl.handle.net/21.11116/0000-0008-D4B2-F

要旨

The quantum Hall effect (QHE) is traditionally considered to be a purely two-dimensional (2D) phenomenon. Recently, however, a three-dimensional (3D) version of the QHE was reported in the Dirac semimetal ZrTe₅. It was proposed to arise from a magnetic-field-driven Fermi surface instability, transforming the original 3D electron system into a stack of 2D sheets. Here, we report thermodynamic, spectroscopic, thermoelectric and charge transport measurements on such ZrTe5 samples. The measured properties: magnetization, ultrasound propagation, scanning tunneling spectroscopy, and Raman spectroscopy, show no signatures of a Fermi surface instability, consistent with in-field single crystal X-ray diffraction. Instead, a direct comparison of the experimental data with linear response calculations based on an effective 3D Dirac Hamiltonian suggests that the quasi-quantization of the observed Hall response emerges from the interplay of the intrinsic properties of the ZrTe₅ electronic structure and its Dirac-type semi-metallic character.