Lab impressions
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Left: attoDRY 1000, top-loading closed-cycle cryostat with 3D vector superconducting magnet (attocube Systems) Right: Cryogenic microscope objective and piezo positioners -
Magneto-optics spectroscopy setup based on attoDRY 1000 -
Exemplary PL magnetic field sweeps of the encapsulated 14L CrSBr sample along the crystal a-,b- and c-axis respectively.
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To perform magneto-optical experiments at cryogenic temperatures down to 4 K and under magnetic fields up to 5 T (out-of-plane) and 2 T (in-plane), we utilize a closed-cycle cryostat equipped with a 3D vector superconducting magnet and motorized nanopositioners (attoDRY1000, attocube). This versatile system enables detailed investigations of magnetic responses, such as the magnetic anisotropy of multilayer CrSBr, correlated magnetic order, and associated optical transitions. Low-temperature measurements are crucial for revealing intrinsic linewidths determined by sample quality, as phonon absorption is significantly suppressed.
References:
“Magnetic Correlation Spectroscopy in CrSBr”
Lukas Krelle, Ryan Tan, Daria Markina, Priyanka Mondal, Kseniia Mosina, Kevin Hagmann, Regine von Klitzing, Kenji Watanabe, Takashi Taniguchi, Zdenek Sofer, Bernhard Urbaszek
arXiv:2503.08390
“Revealing exciton masses and dielectric properties of monolayer semiconductors with high magnetic fields”
M. Goryca, J. Li, A.V. Stier, T. Taniguchi, K. Watanabe, E. Courtade, S. Shree, C. Robert, B. Urbaszek, X. Marie & S.A. Crooker, Nature Communications, 10, 4172 (2019)