Oliver Thewalt

    Oliver Thewalt

    Theoretical Physics | Quantum Biology | Dark Matter Research | Energy Consulting | Creation of Hydrogen ATOM in the Higgs Field >> Vote for Nobel Prize

    Anomalous Hall effect in ZrTe5

    https://www.nature.com/articles/s41567-018-0078-z
    Anomalous Hall effect in ZrTe5
     
    Letter | Published: 19 March 2018
     
    Anomalous Hall effect in ZrTe5
    Tian Liang, Jingjing Lin, Quinn Gibson, Satya Kushwaha, Minhao Liu, Wudi Wang, Hongyu Xiong, Jonathan A. Sobota, Makoto Hashimoto, Patrick S. Kirchmann, Zhi-Xun Shen, R. J. Cava & N. P. Ong
    Nature Physicsvolume 14, pages451–455 (2018) | Download Citation
     
    Abstract
    Research in topological matter has expanded to include the Dirac and Weyl semimetals1,2,3,4,5,6,7,8,9,10, which feature three-dimensional Dirac states protected by symmetry. Zirconium pentatelluride has been of recent interest as a potential Dirac or Weyl semimetal material. Here, we report the results of experiments performed by in situ three-dimensional double-axis rotation to extract the full 4π solid angular dependence of the transport properties. A clear anomalous Hall effect is detected in every sample studied, with no magnetic ordering observed in the system to the experimental sensitivity of torque magnetometry. Large anomalous Hall signals develop when the magnetic field is rotated in the plane of the stacked quasi-two-dimensional layers, with the values vanishing above about 60 K, where the negative longitudinal magnetoresistance also disappears. This suggests a close relation in their origins, which we attribute to the Berry curvature generated by the Weyl nodes.