Polarized X-ray absorption study of Bi2Sr2CuO6 and Bi2Sr2CaCu2O8 |
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| Authors: | C F J Flipse G van der Laan B T Thole S Myhra |
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| Institution: | (1) Surface Science Research Center, University of Liverpool, Grove Street, P.O. Box 147, L69 3BX Liverpool, UK;(2) Soft X-ray Science and Technology, SERC Daresbury Laboratory, WA4 4AD Warrington, UK;(3) Material Science Centre, University of Groningen, Groningen, The Netherlands;(4) Division of Science and Technology, Griffith University, Nathan, Australia |
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| Abstract: | Polarization dependent X-ray absorption measurements on single crystal Bi2Sr2CuO6 (T
c
=9 K) and Bi2Sr2CaCu2O8 (T
c
=80 K) with one and two CuO2 layers, respectively, show no energy shift of the Cu 2p main peak, and no relation between the amount of 3d(m=0, ±1) character and the critical temperatureT
c
. At grazing incidence a structure in Bi2Sr2CaCu2O8 is found at 937 eV, which can be ascribed to a composite state of Cu 3d(z
2), Cu 4s ando–2p(z). |
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| Keywords: | |
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