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Dive into the research topics where M. M. Nielsen is active.

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Featured researches published by M. M. Nielsen.


Surface Science | 1994

Structure of the quasihexagonal close-packed (4 × 4) Na layer on Al(111): a SEXAFS study

A. Schmalz; S. Aminpirooz; J. Haase; D. Batchelor; M. M. Nielsen; E. Bøgh; D.L. Adams

Abstract The Al(111)-(4 × 4)-Na structure formed by adsorption of Na on Al(111) at low temperature is studied by surface extended X-ray absorption fine structure (SEXAFS). Analysis of the SEXAFS measurements shows that the adsorbed layer is quasihexagonal close-packed and slightly compressed, with a nearest-neighbour Na-Na bond length of 3.70 ± 0.03 A. Na atoms are adsorbed in 3 different adsorption sites with roughly equal Na-Al bond lengths of 2.8 A but different perpendicular distances from the surface. Thus the Na layer is not strictly planar.


Physical Review B | 1994

Structure of Al (111)-(√ 3×√ 3) R30°-Na: A LEED study

Jeppe Burchhardt; M. M. Nielsen; D.L. Adams; Edvin Lundgren; Jesper N Andersen


Physical Review Letters | 1994

Enhanced surface vibrations and reconstruction of the Al(111) surface induced by Rb adsorption

M. M. Nielsen; J. Burchhardt; D.L. Adams; Edvin Lundgren; J. N. Andersen


Physical Review B | 1992

Temperature-dependent local geometries in the system Al(100)- c (2×2)-Na: A surface extended x-ray-absorption fine-structure study

Aminpirooz S; Schmalz A; Becker L; Pangher N; Haase J; M. M. Nielsen; D. Batchelor; E. Bøgh; D.L. Adams


Physical Review B | 1994

Structure of Ni(100)-c(2 x 2)-Na: A LEED analysis.

M. M. Nielsen; J. Burchhardt; D.L. Adams


Physical Review B | 1998

STRUCTURE OF THE AL(111)-(3 3)R30-CS PHASE

M. M. Nielsen; J. Burchhardt; D.L. Adams; J. N. Andersen


Physical Review B | 1999

Structure of Al(111)-(2x2)-Rb

D.L. Adams; M. M. Nielsen; J. Burchhardt; J. N. Andersen


Outlines. Critical Practice Studies | 2003

Representations at Work

M. M. Nielsen


Physical Review B | 1994

STRUCTURE OF AL(111)-(33)R 30-NA : A LEED STUDY

J. Burchhardt; M. M. Nielsen; D.L. Adams; Edvin Lundgren; J. N. Andersen


Physical Review B | 1994

Structure of Al(111)-( sqrt 3 x sqrt 3 )R30 degrees-Na: A LEED study.

J. Burchhardt; M. M. Nielsen; D.L. Adams; Edvin Lundgren; J. N. Andersen

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