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  • APL23-AR-02212

    Rights statement: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 122, 222601 (2023) and may be found at https://pubs.aip.org/aip/apl/article/122/22/222601/2893310/

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Sensitivity of a DC SQUID with a non-sinusoidal current-phase relation in its junctions

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Sensitivity of a DC SQUID with a non-sinusoidal current-phase relation in its junctions. / Prance, Jonathan; Thompson, Michael.
In: Applied Physics Letters, Vol. 122, No. 22, 222601, 29.05.2023.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Prance, J & Thompson, M 2023, 'Sensitivity of a DC SQUID with a non-sinusoidal current-phase relation in its junctions', Applied Physics Letters, vol. 122, no. 22, 222601. https://doi.org/10.1063/5.0151607

APA

Prance, J., & Thompson, M. (2023). Sensitivity of a DC SQUID with a non-sinusoidal current-phase relation in its junctions. Applied Physics Letters, 122(22), Article 222601. https://doi.org/10.1063/5.0151607

Vancouver

Prance J, Thompson M. Sensitivity of a DC SQUID with a non-sinusoidal current-phase relation in its junctions. Applied Physics Letters. 2023 May 29;122(22):222601. doi: 10.1063/5.0151607

Author

Prance, Jonathan ; Thompson, Michael. / Sensitivity of a DC SQUID with a non-sinusoidal current-phase relation in its junctions. In: Applied Physics Letters. 2023 ; Vol. 122, No. 22.

Bibtex

@article{f63e90d926af40149a216885702b5c9d,
title = "Sensitivity of a DC SQUID with a non-sinusoidal current-phase relation in its junctions",
abstract = "In ballistic superconductor–normal metal–superconductor Josephson junctions, such as those made from graphene or high mobility semiconductors, the current-phase relation may not have the common, sinusoidal form but can be skewed to have a peak supercurrent at a phase difference greater than π/2⁠. Here, we use a numerical simulation that includes thermal noise to investigate the sensitivity of a DC superconducting quantum interference device (SQUID) with such junctions. The simulation uses a resistively and capacitively shunted junction model where the current-phase relation of each junction can be defined as an arbitrary function. The modulation, transfer function, noise, and sensitivity of a SQUID are calculated for different types of current-phase relation. For the examples considered here, we find that the flux sensitivity of the SQUID is always degraded by forward skewing of the current-phase relation, even in cases where the transfer function of the SQUID has been improved.",
author = "Jonathan Prance and Michael Thompson",
year = "2023",
month = may,
day = "29",
doi = "10.1063/5.0151607",
language = "English",
volume = "122",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Inc.",
number = "22",

}

RIS

TY - JOUR

T1 - Sensitivity of a DC SQUID with a non-sinusoidal current-phase relation in its junctions

AU - Prance, Jonathan

AU - Thompson, Michael

PY - 2023/5/29

Y1 - 2023/5/29

N2 - In ballistic superconductor–normal metal–superconductor Josephson junctions, such as those made from graphene or high mobility semiconductors, the current-phase relation may not have the common, sinusoidal form but can be skewed to have a peak supercurrent at a phase difference greater than π/2⁠. Here, we use a numerical simulation that includes thermal noise to investigate the sensitivity of a DC superconducting quantum interference device (SQUID) with such junctions. The simulation uses a resistively and capacitively shunted junction model where the current-phase relation of each junction can be defined as an arbitrary function. The modulation, transfer function, noise, and sensitivity of a SQUID are calculated for different types of current-phase relation. For the examples considered here, we find that the flux sensitivity of the SQUID is always degraded by forward skewing of the current-phase relation, even in cases where the transfer function of the SQUID has been improved.

AB - In ballistic superconductor–normal metal–superconductor Josephson junctions, such as those made from graphene or high mobility semiconductors, the current-phase relation may not have the common, sinusoidal form but can be skewed to have a peak supercurrent at a phase difference greater than π/2⁠. Here, we use a numerical simulation that includes thermal noise to investigate the sensitivity of a DC superconducting quantum interference device (SQUID) with such junctions. The simulation uses a resistively and capacitively shunted junction model where the current-phase relation of each junction can be defined as an arbitrary function. The modulation, transfer function, noise, and sensitivity of a SQUID are calculated for different types of current-phase relation. For the examples considered here, we find that the flux sensitivity of the SQUID is always degraded by forward skewing of the current-phase relation, even in cases where the transfer function of the SQUID has been improved.

U2 - 10.1063/5.0151607

DO - 10.1063/5.0151607

M3 - Journal article

VL - 122

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 22

M1 - 222601

ER -