Direct evidence of hidden local spin polarization in a centrosymmetric superconductor LaO0.55 F0.45BiS2

@article{Wu2017DirectEO,
  title={Direct evidence of hidden local spin polarization in a centrosymmetric superconductor LaO0.55 F0.45BiS2},
  author={Shilong Wu and Kazuki Sumida and Koji Miyamoto and Kazuaki Taguchi and Tomoki Yoshikawa and Akio Kimura and Yoshifumi Ueda and Masashi Arita and Masanori Nagao and Satoshi Watauchi and Isao Tanaka and Taichi Okuda},
  journal={Nature Communications},
  year={2017},
  volume={8}
}
Conventional Rashba spin polarization is caused by the combination of strong spin–orbit interaction and spatial inversion asymmetry. However, Rashba–Dresselhaus-type spin-split states are predicted in the centrosymmetric LaOBiS2 system by recent theory, which stem from the local inversion asymmetry of active BiS2 layer. By performing high-resolution spin- and angle-resolved photoemission spectroscopy, we have investigated the electronic band structure and spin texture of superconductor LaO0… 
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