Pseudogap in a thin film of a conventional superconductor.

  title={Pseudogap in a thin film of a conventional superconductor.},
  author={Benjamin Sac{\'e}p{\'e} and Claude Chapelier and Tatyana. I. Baturina and Valerii M. Vinokur and Mikhail R. Baklanov and Marc Sanquer},
  journal={Nature communications},
A superconducting state is characterized by the gap in the electronic density of states, which vanishes at the superconducting transition temperature T(c). It was discovered that in high-temperature superconductors, a noticeable depression in the density of states, the pseudogap, still remains even at temperatures above T(c). Here, we show that a pseudogap exists in a conventional superconductor, ultrathin titanium nitride films, over a wide range of temperatures above T(c). Our study reveals… 
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