Analysis of Near-Field Magnetic Responses on ZrTe5 through Cryogenic Magneto-THz Nano-Imaging

• DOI: 10.3390/instruments8010021
• Publication Date: 2024-03-05T13:35:54Z
• Authors: Samuel Haeuser; Richard H. J. Kim; Joong-Mok Park; Randall K. Chan; Muhammad Imran; Thomas Koschny; Jigang Wang
• Keywords: Magneto

One manifestation of light-Weyl fermion interaction is the emergence chiral magnetic effects under fields. Probing real space responses at terahertz (THz) scales challenging but highly desired, as local are less affected by topologically trivial inhomogeneity that ubiquitous in spatially averaged measurements. Here, we implement a cryogenic THz microscopy instrument field environment—a task only recently achieved. We explore technical approach this system and characterize field’s influence on our AFM operation statistical noise analysis. find evidence for near-field spatial variations topological semimetal ZrTe5 up to 5-Tesla obtain spectra discuss their implications future studies effect.