Regensburg 2022 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 7: (Quantum) Transport Properties

HL 7.8: Vortrag

Montag, 5. September 2022, 17:15–17:30, H31

Coplanar waveguides for electronic measurements at terahertz frequencies — •Sergey Lavrentyev¹, Johannes Gröbmeyer¹, Gerhard Huber², and Alexander Holleitner¹ — ¹Walter Schottky Institut and Physics Department, TU Munich — ²Walther-Meißner-Institut and Physics Department, TU Munich

We explore the usability of gold coplanar waveguides on a sapphire substrate as contacts for electronic transport measurements on 2D and topological materials in the terahertz regime. Our simulations reveal different modes with low attenuation. For the coplanar waveguide, we find the lowest attenuation in even modes compared to the predominance of odd modes in coplanar strip geometries. Moreover, our results show a frequency dependent behavior of the complex refractive index of the modes at sub-millimeter wavelengths. We find that gold coplanar waveguides are well suited for electronic measurements at terahertz frequencies.