Homogeneous superconducting phase in TiN film : a complex impedance study

P. Diener; H. Schellevis; J. J. A. Baselmans

doi:10.1063/1.4771995

Homogeneous superconducting phase in TiN film : a complex impedance study

Superconductivity 2015-06-12 v2

Authors: P. Diener , H. Schellevis , J. J. A. Baselmans

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Abstract

The low frequency complex impedance of a high resistivity 92 {\mu}{\Omega} cm and 100 nm thick TiN superconducting film has been measured via the transmission of several high sensitivity GHz microresonators, down to Tc/50. The temperature dependence of the kinetic inductance follows closely BCS local electrodynamics, with one well defined superconducting gap. This evidences the recovery of an homogeneous superconducting phase in TiN far from the disorder and composition driven transitions. Additionally, we observe a linearity between resonator quality factor and frequency temperature changes, which can be described by a two fluid model.

Keywords

TiN film superconducting phase complex impedance kinetic inductance BCS theory two-fluid model microresonator

Cite

@article{arxiv.1211.6678,
  title  = {Homogeneous superconducting phase in TiN film : a complex impedance study},
  author = {P. Diener and H. Schellevis and J. J. A. Baselmans},
  journal= {arXiv preprint arXiv:1211.6678},
  year   = {2015}
}

Comments

5 pages, 4 figures, accepted in Appl. Phys. Lett

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