Master Student

vor 7 Monaten


Berlin, Deutschland Leibniz-Institut für Kristallzüchtung im Forschungsverbund Berlin e.V. Vollzeit

**Leibniz-Institut für Kristallzüchtung im Forschungsverbund Berlin e.V.**:

- Master student (M/F/d)

for the master thesis topic:
„Growth and characterization of two dimensional NbSe2-films for superconducting quantum bits”.

**Aufgabenbeschreibung**:
Your tasks:

- Growth of NbSe2 films on different substrates like glass, Sapphire, Silicon
- Optimization of the deposition process by varying the substrate temperature, growth rate of Niobium and Selenium
- Characterization of the films by X-ray diffractometry (XRD), Atomic force microscopy (AFM), Raman and absorption spectra.
- Temperature-dependent measurements 1K - 320K to determine the transition temperature.

Two dimensional (2D) materials are of great interest because of their unique physical and chemical properties. Among the 2D-materials, NbSe2 has attracted much attention due to the persistency of superconductivity into the 2D-limit. Further, 2D-materials were proven to enhance the performance of superconducting qubits: by manual exfoliation and stacking 2D-NbSe2 and a monolayer of 2D-dielectric into a superconducting-capacitor, the lateral dimensions of the qubit shunt capacitor could be reduced by a factor 100 opening a pathway to higher integration of superconducting qubits.
The aim of the Master thesis is to grow NbSe2 films and characterize them in terms of their crystalline quality and electronic properties such as the superconducting transition temperature (TC). For this purpose, the Master student will grow Nb films via physical vapor deposition which will be selenized in a separate chamber. The quality of the grown films will be investigated to ensure a fully closed and homogeneous film. Once the grown films have acceptable quality, the transition temperature will be determined.

**Erwartete Qualifikationen**:
**Hinweise zur Bewerbung**:
Have we aroused your interest?



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