Dresden 2020 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 69: Nano- and Optomechanics (joint session TT/CPP/HL)
TT 69.2: Vortrag
Freitag, 20. März 2020, 10:00–10:15, HSZ 03
Magnetoelastic readout concepts — •Daniel Schwienbacher1,2,3, Nynke Vlietstra1,2, Thomas Luschmann1,2,3, Rudolf Gross1,2,3, and Hans Huebl1,2,3 — 1Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany — 2Physik-Department, Technische Universität München, Garching, Germany — 3Munich Center for Quantum Science and Technologies, München, Germany
Nanostring resonators are prime candidates for mechanical sensing applications. Typically, they are used for mass and force sensing. However, it is also possible to use these resonators for the investigation of solid state properties of materials, like magnetoelastics. We investigated the mechanical motion of a 60 µ m long SiN/Co bi-layer nanostring resonator with a resonance frequency in the MHz range. Here, we simultaneously use optical and electrical readout techniques. We observe the well known impact of the magnetoelastics, due to the presence of Co, on the resonance frequency of the nanostring. In addition, we study the impact of electrical transport through the string resonator on the mechanical properties of the system.