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6CCVD Research

Superconducting boron doped nanocrystalline diamond microwave coplanar resonator

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2022-09-10
JournalCarbon
AuthorsJerome A. Cuenca, Thomas L. R. Brien, Soumen Mandal, Scott Manifold, S. Doyle
InstitutionsCardiff University
Citations9

Abstract

Section titled ā€œAbstractā€

A coplanar waveguide resonator (CPR) is presented for kinetic inductance () and penetration depth () measurements of superconducting boron doped nanocrystalline diamond (B-NCD) at microwave frequencies of 0.4 to 1.2 GHz and at temperatures below 3 K. Using finite element modelling and experimental measurements, this work demonstrates that thin granular B-NCD films (thickness 500 nm) on Si have a large penetration depth (3.8 Ī¼m), and therefore an associated high kinetic inductance per square ( 670 to 690 pH/). These values are much larger than those typically obtained for films on single crystal diamond, which is likely due to the high granularity of the nanocrystalline films. Based on the measured Q factors of the structure, the calculated surface resistance is found to be around 1 to 6 Ī¼Ī© at K in the 0.4 to 1.2 GHz range, demonstrating the potential for granular B-NCD for high quality factor superconducting microwave resonators and highly sensitive kinetic inductance detectors.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2009 - Electronic and optical properties of boron-doped nanocrystalline diamond films [Crossref]
  2. 2018 - Boron doped diamond: A designer electrode material for the twenty-first century [Crossref]
  3. 2004 - Superconductivity in diamond [Crossref]
  4. 2005 - Electronic properties of boron-doped diamond on the border between the normal and the superconducting state [Crossref]
  5. 2004 - Superconductivity in diamond thin films well above liquid helium temperature [Crossref]
  6. 2004 - Dependence of the superconducting transition temperature on the doping level in single-crystalline diamond films [Crossref]
  7. 2011 - The diamond superconducting quantum interference device [Crossref]
  8. 2019 - Single-crystalline boron-doped diamond superconducting quantum interference devices with regrowth-induced step edge structure [Crossref]
  9. 2017 - Superconductivity in planarised nanocrystalline diamond films [Crossref]
  10. 2022 - Low-noise diamond-based D.C. Nano-SQUIDs [Crossref]

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