Role of spin-orbit coupling and hybridization effects in the electronic structure of ultrathin Bi films.

@article{Hirahara2006RoleOS,
  title={Role of spin-orbit coupling and hybridization effects in the electronic structure of ultrathin Bi films.},
  author={Toru Hirahara and Tadaaki Nagao and Iwao Matsuda and Gustav Bihlmayer and Evgueni V. Chulkov and Yu M Koroteev and Pedro M. Echenique and Mitsuhiro Saito and Shuji Hasegawa},
  journal={Physical review letters},
  year={2006},
  volume={97 14},
  pages={146803}
}
The electronic structure of Bi(001) ultrathin films (thickness > or =7 bilayers) on Si(111)-7x7 was studied by angle-resolved photoemission spectroscopy and first-principles calculations. In contrast with the semimetallic nature of bulk Bi, both the experiment and theory demonstrate the metallic character of the films with the Fermi surface formed by spin-orbit-split surface states (SSs) showing little thickness dependence. Below the Fermi level, we clearly detected quantum well states (QWSs… CONTINUE READING
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