Spontaneous Orbital-Selective Mott Transitions and the Jahn-Teller Metal of A_{3}C_{60}.

  title={Spontaneous Orbital-Selective Mott Transitions and the Jahn-Teller Metal of A\_\{3\}C\_\{60\}.},
  author={Shintaro Hoshino and Philipp Werner},
  journal={Physical review letters},
  volume={118 17},
The alkali-doped fullerides A_{3}C_{60} are half-filled three-orbital Hubbard systems which exhibit an unconventional superconducting phase next to a Mott insulator. While the pairing is understood to arise from an effectively negative Hund coupling, the highly unusual Jahn-Teller metal near the Mott transition, featuring both localized and itinerant electrons, has not been understood. This property is consistently explained by a previously unrecognized phenomenon: the spontaneous transition of… Expand

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  • Mod. Phys. 68, 13
  • 1996
  • Rev. B 94, 075107 (2016). PRL 118, 177002
  • 2017
  • Matter 28, 153001
  • 2016
Nature (London) 530
  • 461
  • 2016
Nature 530
  • 461
  • 2016
  • Rev. B 93, 155161
  • 2016
  • Rev. B 94, 155152
  • 2016