Identification of the surface features in the electronic structure of Cr

Khadiza Ali; Shyama R. Varier; Deepnarayan Biswas; Srinivas C. Kandukuri; Kalobaran Maiti

Identification of the surface features in the electronic structure of Cr

Materials Science 2015-06-25 v1

Authors: Khadiza Ali , Shyama R. Varier , Deepnarayan Biswas , Srinivas C. Kandukuri , Kalobaran Maiti

Abstract

We studied the electronic structure of high quality Cr(110) films grown on W(110) surface employing photoemission spectroscopy. Experiments on the differently aged samples revealed distinct signatures of the surface and bulk features in the electronic structure. It is observed that the adsorbed oxygens form covalent bonds with the surface Cr atoms at higher temperatures, while they remain almost unreacted at low temperatures. In addition to the spin density wave transition induced band folding across the bulk Neel temperature, we discover a weakly dispersing sharp feature emerging near the Fermi level at low temperatures presumably due to correlation induced effects.

Keywords

electronic structure Cr(110) films photoemission spectroscopy surface features spin density wave Neel temperature Fermi level correlation effects

Cite

@article{arxiv.1506.07482,
  title  = {Identification of the surface features in the electronic structure of Cr},
  author = {Khadiza Ali and Shyama R. Varier and Deepnarayan Biswas and Srinivas C. Kandukuri and Kalobaran Maiti},
  journal= {arXiv preprint arXiv:1506.07482},
  year   = {2015}
}

Identification of the surface features in the electronic structure of Cr

Abstract

Keywords

Cite

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