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Showing 1–5 of 5 results
Advanced filters: Author: Ignace Jarrige Clear advanced filters

  • The thickness dependence of the dispersion of spin waves in mesoscopic iron films is measured and found to be renormalized in the out-of-plane direction as the thickness is reduced. The results are captured by a Heisenberg model that accounts for the confinement in the out-of-plane direction through the loss of Fe bonds.

    • Jonathan Pelliciari
    • Sangjae Lee
    • Valentina Bisogni
    Research
    Nature Materials
    Volume: 20, P: 188-193

  • The integration of α-tantalum in superconducting circuits has significantly enhanced transmon qubit coherence times, yet conventional high-temperature deposition methods pose compatibility challenges with thermally sensitive components. Here, the authors demonstrate a room-temperature growth process using a niobium seed layer, resulting in resonators with state-of-the-art quality factors, thereby expanding the practical applications of α-tantalum in superconducting circuits.

    • Guillaume Marcaud
    • David Perello
    • Ignace Jarrige
    ResearchOpen Access
    Communications Materials
    Volume: 6, P: 1-7

  • Understanding the connection between qubit coherence and microscopic materials properties is vital for improving device performance. Here, the relaxation times of superconducting transmon qubits are found to be directly correlated with Nb film properties such as grain size and surface oxide composition.

    • Anjali Premkumar
    • Conan Weiland
    • Ignace Jarrige
    ResearchOpen Access
    Communications Materials
    Volume: 2, P: 1-9