# Thin-film based ultralow noise SQUID magnetometer

## TL;DR

This paper presents a novel ultralow noise SQUID magnetometer using thin-film niobium technology, suitable for applications like geophysics and magnetic resonance imaging, demonstrating superior noise performance.

## Contribution

It introduces a thin-film based SQUID magnetometer with enhanced noise performance enabled by sub-micrometer Josephson junctions, advancing sensor technology.

## Key findings

- Achieved ultralow noise levels in the magnetometer
- Demonstrated suitability for geophysics and MRI applications
- Utilized niobium thin-film technology for improved performance

## Abstract

We report on the development of an ultralow noise thin-film based SQUID magnetometer. A niobium thin-film pickup coil is connected to the input coil of a SQUID current sensor. The low capacitance of the used sub-micrometer cross-type Josephson junctions enable superior noise performance of the device. Application scenarios e.g. in geophysics and ultra-low field magnetic resonance imaging are discussed.

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Source: https://tomesphere.com/paper/1705.06152