Adhikary, Ganesh ; Biswas, Deepnarayan ; Sahadev, Nishaina ; Bindu, R. ; Kumar, Neeraj ; Thamizhavel, A. ; Dhar, S. K. ; Maiti, Kalobaran ; Garg, Alka B. ; Mittal, R. ; Mukhopadhyay, R. (2011) Surface-bulk differences in the electronic structure of CaFe2As2 AIP Conference Proceedings: SOLID STATE PHYSICS, PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010, 1349 . pp. 837-838. ISSN 0094243X
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Official URL: http://proceedings.aip.org/resource/2/apcpcs/1349/...
Related URL: http://dx.doi.org/10.1063/1.3606118
Abstract
We studied the electronic structure of CaFe2As2 using photoemission spectroscopy. The features in the x‐ray photoemission spectra could be described using band structure results. The electronic states close to the Fermi level are found to be dominated by the Fe 3d contributions. The valence band spectra exhibit significant dependence on the photon energy used for the experiments. A comparison of the spectra at different photon energies suggests that the temperature dependence of the bulk and surface electronic states are significantly different–the bulk Fe 3d states seem to be strongly temperature dependent while the surface states appear to be almost insensitive. These results have significant implication in the understanding of superconductivity in this class of materials.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Institute of Physics. |
Keywords: | Electronic Structure; Band Structure; Photons; Photoemission |
ID Code: | 95832 |
Deposited On: | 08 Feb 2013 10:55 |
Last Modified: | 08 Feb 2013 10:55 |
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