U. Wieser, U. Kunze, et al.
Physica E: Low-Dimensional Systems and Nanostructures
High resolution Cu (Formula presented) x-ray absorption spectra of bulk fcc Cu metal are compared with those of thin Cu layers in Cu/Fe multilayers. Comparison of the measured fine structure with that obtained from a fully relativistic first-principles calculation for fcc and bcc Cu reveals that Cu is bcc in Cu(3 Å)/Fe(10 Å) and fcc in Cu(10 Å)/Fe(3 Å) multilayers. This result indicates that the thicker layer simply acts as a template for the structure of the thinner layer. The excellent agreement between experimental and theoretical spectra also demonstrates the validity of the theoretical approach. The theoretical spectra are discussed in terms of their angular momentum composition and the energy dependence of the radial transition matrix elements. © 1996 The American Physical Society.
U. Wieser, U. Kunze, et al.
Physica E: Low-Dimensional Systems and Nanostructures
G. Will, N. Masciocchi, et al.
Zeitschrift fur Kristallographie - New Crystal Structures
P. Martensson, R.M. Feenstra
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
P.C. Pattnaik, D.M. Newns
Physical Review B