Quantum Critical Origin of the Superconducting Dome in SrTiO_{3}.

@article{Edge2015QuantumCO,
  title={Quantum Critical Origin of the Superconducting Dome in SrTiO\_\{3\}.},
  author={Jonathan M. Edge and Yaron Kedem and Ulrich Aschauer and Nicola A. Spaldin and Alexander V. Balatsky},
  journal={Physical review letters},
  year={2015},
  volume={115 24},
  pages={
          247002
        }
}
We expand the well-known notion that quantum criticality can induce superconductivity by proposing a concrete mechanism for superconductivity due to quantum ferroelectric fluctuations. To this end, we investigate the origin of superconductivity in doped SrTiO_{3} using a combination of density functional and strong coupling theories within the framework of quantum criticality. Our density functional calculations of the ferroelectric soft mode frequency as a function of doping reveal a crossover… 

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