SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 10: Correlated Electrons: Other Materials

TT 10.2: Vortrag

Montag, 27. März 2023, 15:15–15:30, HSZ 204

Miniaturized setup for quantum oscillatory studies under temperature modulation — •Michelle Hollricher, Christian Pfleiderer, and Marc A. Wilde — Physik-Department, Technical University of Munich, D-85748 Garching, Germany

Measurements of the magnetization and its derivatives provide fundamental insights into the magnetic properties of metals. In particular this is true for magnetic quantum oscillations. We report the development of a miniaturized setup for direct measurements of the temperature derivative of the magnetization as a function of magnetic field and temperature, using a modular setup comprising AC heating with inductive signal pick-up. The dimensions of our setup have been optimized to permit use in combination with standard mechanical rotators, this way enabling measurements of the magnetization as a function of magnetic field orientation down to ultra-low temperatures. Following thorough characterization of the frequency response of our miniaturized setup, we revisited the de Haas-van Alphen effect in bismuth, focusing on the electronic structure of the electron pockets.