Characterization of Superconducting Properties in NbTiN Thin Films under Cryogenic Conditions

Bachelor Thesis (2024)
Author(s)

A. Guo (TU Delft - Aerospace Engineering)

Contributor(s)

R.H.M. Smit – Graduation committee member (TU Delft - QN/Smit Lab)

R Ishihara – Graduation committee member (TU Delft - QID/Ishihara Lab)

W. Alves Bragança Júnior – Graduation committee member (TU Delft - QID/Ishihara Lab)

Faculty
Applied Sciences
More Info
expand_more
Publication Year
2024
Language
English
Graduation Date
13-12-2024
Awarding Institution
Delft University of Technology
Programme
['Aerospace Engineering']
Faculty
Applied Sciences
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

This thesis is on characterizing the superconducting properties of NbTiN thin films under cryogenic conditions for potential applications in modular quantum computers. The characterization involves development of a measurement setup using a four-point probe method, which measures resistivityof magnetron sputtered thin films of NbTiN at room temperature and (cryogenic) temperature near ab- solute zero.
The results revealed unexpected resistivity values at 3.3 K, questioning the sample’s elemental com- position. Despite superconductivity not being reached by the setup, the research shows how impor- tant optimal elemental composition is and that the implementation of pulsed currents minimizes Joule Heating.
Despite not having characterized superconducting properties, taking steps back might be essential to take a step forward in developing a quantum computer.
This thesis was carried out at TU Delft as part of the Bachelor Final Project course.

Files

License info not available
warning

File under embargo until 13-12-2026