Strong phonon replicas in be 1s photoemission spectra.
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.
Andersen
J N
JN
Department of Synchrotron Radiation Research, Institute of Physics, Lund University, P.O. Box 118, S-221 00 Lund, Sweden. Jesper.Andersen@sljus.lu.se
Balasubramanian
T
T
Almbladh
C O
CO
Johansson
L I
LI
Nyholm
R
R