Calculations for Magnetism in SQUIDs at Millikelvin Temperatures
S. Sendelbach, D. Hover, A. Kittel, M. M\"uck, John M. Martinis, and, R. McDermott
TL;DR
This paper introduces a calculation method to determine unpaired spin surface density in dc SQUIDs from flux-temperature measurements at millikelvin temperatures, aiding understanding of magnetic properties in quantum devices.
Contribution
It provides a novel calculation approach to analyze flux vs. temperature data for extracting spin surface density in SQUIDs.
Findings
Quantitative surface spin density values obtained
Enhanced understanding of magnetic behavior at millikelvin temperatures
Method applicable to other superconducting quantum devices
Abstract
Here we present details of a calculation that allows us to extract a surface density of unpaired spins from flux vs. temperature experiments performed on field-cooled dc Superconducting QUantum Interference Devices (dc SQUIDs).
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Semiconductor Quantum Structures and Devices · Quantum and electron transport phenomena