Strong phonon replicas in be 1s photoemission spectra |
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| Authors: | Andersen J N Balasubramanian T Almbladh C O Johansson L I Nyholm R |
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| Affiliation: | Department of Synchrotron Radiation Research, Institute of Physics, Lund University, P.O. Box 118, S-221 00 Lund, Sweden. Jesper.Andersen@sljus.lu.se |
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| Abstract: | The Be 1s core level photoemission line from metallic Be is shown to contain unexpected internal fine structure. We argue that this fine structure is caused by intrinsic excitation of a narrow band of optical phonons in the 1s photoemission process. The general importance of the present results for high resolution core level photoemission investigations of metals is pointed out. |
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