Field-induced superconducting phase of FeSe in the BCS-BEC cross-over.

  title={Field-induced superconducting phase of FeSe in the BCS-BEC cross-over.},
  author={Shigeru Kasahara and Tatsuya Watashige and Tetsuo Hanaguri and Yuhki Kohsaka and Takuya Yamashita and Yusuke Shimoyama and Yuta Mizukami and Ryota Endo and Hiroaki Ikeda and Kazushi Aoyama and Taichi Terashima and Shinya Uji and Thomas J A Wolf and Hilbert von L{\"o}hneysen and Takasada Shibauchi and Yuji Matsuda},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={111 46},
Fermi systems in the cross-over regime between weakly coupled Bardeen-Cooper-Schrieffer (BCS) and strongly coupled Bose-Einstein-condensate (BEC) limits are among the most fascinating objects to study the behavior of an assembly of strongly interacting particles. The physics of this cross-over has been of considerable interest both in the fields of condensed matter and ultracold atoms. One of the most challenging issues in this regime is the effect of large spin imbalance on a Fermi system… CONTINUE READING
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