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Calculation of penetration depth in cecu2si2

We report the local measurements of the magnetic penetration depth in a superconducting Nb film using magnetic force microscopy MFM. We developed a method for quantitative extraction of the penetration depth from single-parameter simultaneous fits to the lateral and height profiles of the MFM signal, and demonstrate that the obtained value is in excellent agreement with that obtained from the bulk magnetization measurements. In-plane magnetic penetration depth of superconducting CaKFe4As4. Khasanov, Rustem; Meier, William R.
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Fully gapped d-wave superconductivity in CeCu2Si2.

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Fully gapped superconductivity with no sign change in the prototypical heavy-fermion CeCu2Si2

Either your web browser doesn't support Javascript or it is currently turned off. In the latter case, please turn on Javascript support in your web browser and reload this page. Author contributions: H. Identifying the gap structure of superconductors is vital for understanding the underlying pairing mechanism of the Cooper pairs. The first heavy fermion superconductor to be discovered, CeCu 2 Si 2 , was thought to be a d -wave superconductor with gap nodes, until recent specific heat measurements provided evidence that the gap is fully open across the Fermi surface.
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Try out PMC Labs and tell us what you think. Learn More. Lower—critical field measurements of CeCu 2 Si 2.
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Part of the Springer Theses book series Springer Theses. In this book the author presents two important findings revealed by high-precision magnetic penetration depth measurements in iron-based superconductors which exhibit high-transition temperature superconductivity up to 55 K: one is the fact that the superconducting gap structure in iron-based superconductors depends on a detailed electronic structure of individual materials, and the other is the first strong evidence for the presence of a quantum critical point QCP beneath the superconducting dome of iron-based superconductors. The magnetic penetration depth is a powerful probe to elucidate the superconducting gap structure which is intimately related to the pairing mechanism of superconductivity. The author discusses the possible gap structure of individual iron-based superconductors by comparing the gap structure obtained from the penetration depth measurements with theoretical predictions, indicating that the non-universal superconducting gap structure in iron-pnictides can be interpreted in the framework of A 1g symmetry.
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