SKM 2023 – scientific programme

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DS: Fachverband Dünne Schichten

DS 12: Poster

DS 12.18: Poster

Wednesday, March 29, 2023, 17:00–19:00, P3

hybrid resonant circuits with van der Waals materials — •haolin jin¹, giuseppe serpico², christian n. saggau², sanaz shokri², mickey martini², yejin lee², poya yang¹, sebastian seifert¹, uri vool¹, and nicola poccia² — ¹Max Planck Institute for Chemical Physics of Solids, Dresden, Germany — ²Leibnitz Institute for Solid State and Materials Science Dresden (IFW Dresden), Dresden, Germany

Van der Waals superconductors, especially heterostructures, are believed to exhibit novel superconducting phases. However, the standard measurement techniques designed for bulk superconductors are challenging to apply in 2D materials which cannot be grown in sufficient size and quality. Herein, we introduce an efficient method to explore the properties of 2D materials, by combining them into hybrid resonant circuits. The resonator can have a strong inductive interaction with a small-size superconducting sample, affecting its frequency response. However, creating superconducting contacts between the resonator and the 2D material is challenging, especially for air-sensitive materials where evaporation must be done in a protected glovebox. Here, we present a technique to make robust superconducting contacts to a 2D sample by using a flexible nanomembrane. The Niobium resonator circuit is fabricated on top of the nanomembrane, and via contacts connect it to the 2D materials. Through the circuit response, we can explore the properties of novel unconventional superconductors. Moreover, this hybrid circuit is a new type of quantum device for future quantum technology applications.