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1.	Nogueira, RG, et al. (author) Global Impact of COVID-19 on Stroke Care and IV Thrombolysis 2021 In: Neurology. - 1526-632X. ; 96:23, s. E2824-E2838 Journal article (peer-reviewed)
2.	QVARFORD, M, et al. (author) X-RAY-ABSORPTION AND RESONANT-PHOTOEMISSION STUDY OF CA IN THE HIGH-TEMPERATURE SUPERCONDUCTOR BI2SR2CACU2O8 1992 In: Physical Review B Condensed Matter. - 0163-1829 .- 1095-3795. ; 46:21, s. 14126-14133 Journal article (peer-reviewed)abstract The electronic structure of Ca in the high-temperature superconductor Bi2Sr2CaCu2O8 has been studied by x-ray-absorption spectroscopy and resonant-photoemission at the Ca L2,3 absorption edge. In the x-ray-absorption spectrum no edge structure is seen at the energy corresponding to the Ca 2p3/2 core-level binding energy, in agreement with the very low Ca density of states at the Fermi level predicted by band-structure calculations. Furthermore, the crystal-field splitting of the Ca 3d level, which is characteristic of ionic Ca compounds, is clearly observed in the x-ray-absorption spectrum. The photoemission spectra display strong resonant enhancements of the Ca 3s and 3p core levels as well as strong changes in the intensity and the line shape of the Ca L2,3M2,3M2,3 Auger structure at the Ca L2,3 threshold, showing the localized nature of the 3d states in core ionized Ca. The 3d induced spectator shift of the Ca L2,3M2,3M2,3 complex is fairly small as compared to what has been reported for CaF2, indicating that the screening of the normal Auger final state by the charge carriers in the surrounding Cu-O2 layers is quite efficient. From the Ca L2,3M2,3M2,3 data it is also suggested that, at the Ca L2 threshold, the excited 3d electron participates in a Coster-Kronig-type decay resulting in a 2p3/2 core hole followed by a normal L3M2,3M2,3 Auger decay.

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Type of publication: journal article (2)

Type of content: peer-reviewed (2)

Author/Editor: Zhang, H. (1); Zhang, J. (1); Banerjee, S. (1); Christensen, HK (1); Peres, R. (1); Yoshida, T. (1); show more...; Gupta, R. (1); Luo, J. (1); Schmidt, H. (1); Yamada, S. (1); Campbell, B. (1); Yamamoto, R. (1); Barboza, MA (1); Chaturvedi, S (1); Hankey, GJ (1); Lavados, PM (1); Nguyen, TH (1); Ranta, A (1); Singh, A (1); Truelsen, TC (1); Venketasubramanian, ... (1); Yamada, T (1); Farhoudi, M (1); Shah, R. (1); Sonoda, K (1); Fischer, U (1); Watanabe, D. (1); Min, J. (1); Vanacker, P. (1); Tsivgoulis, G. (1); Akhtar, N. (1); Blanco, A (1); Sharma, M. (1); Lemmens, R. (1); Montaner, J. (1); Gattringer, T. (1); Thijs, V. (1); Karlsson, Ulf O. (1); Park, H. (1); Zhao, WL (1); Rahman, A. (1); Mikulik, R (1); Ringleb, PA (1); Nunes, AP (1); Jurak, L (1); Nevsimalova, M (1); Shimizu, H. (1); Nyholm, R. (1); Ben Sassi, S (1); Lundgren, E. (1); show less...

University: Royal Institute of Technology (1); Lund University (1); Karolinska Institutet (1)

Language: English (2)

Research subject (UKÄ/SCB): Medical and Health Sciences (1)

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