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arXiv · 1308.3230

Singlet-Triplet Superconducting Quantum Magnetometer

Mohammad Alidoust·Klaus Halterman·Jacob Linder
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Abstract

Motivated by the recent experimental realization of a quantum interference transistor based on the superconducting proximity effect, we here demonstrate that the inclusion of a textured ferromagnet both strongly enhances the flux sensitivity of such a device and additionally allows for singlet-triplet switching by tuning a bias voltage. This functionality makes explicit use of the induced spin-triplet correlations due to the magnetic texture. Whereas the existence of such triplet correlations is well-known, our finding demonstrates how spin-triplet superconductivity may be utilized for concrete technology, namely to improve the functionality of ultra-sensitive magnetometers.

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Mohammad Alidoust, Klaus Halterman, Jacob Linder. 2013-08-14. Singlet-Triplet Superconducting Quantum Magnetometer. https://doi.org/10.1103/physrevb.88.075435

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