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List of publications

For a quick and colorful view of my work, you may have a look at several posters and slides of oral presentations in PDF format.

For a more complete information, I am offering you a full list of publications right at this place. Please use it bona fide only. It cannot be overemphasised that any misuse of this list (e.g., in order to demonstrate with its help how stupid I am) is strictly probibited!

Electronic structure effects on B K-edge XANES of minerals
O. Sipr and F. Rocca
Journal of Synchrotron Radiation, Vol. 17, No. 3, 367-373 (2010)

On the importance of the magnetic dipole term Tz in analyzing X-ray magnetic circular dichroism spectra of clusters
O. Sipr, J. Minar, and H. Ebert
Europhysics Letters, Vol. 87, No. 6, 67007 (2009) (6 pages)

On the origin of the differences in the Cu K-edge XANES of isostructural and isoelectronic compounds
O. Sipr, F. Rocca, and P. Fornasini
J. Phys.: Condens. Matter, Vol. 21, No. 25, 255401 (2009) (9 pages)

Magnetism of free and supported clusters: a comparative study
O. Sipr, J. Minar, and H. Ebert
Central European Journal of Physics, Vol. 7, No. 2, 257-263 (2009)

Influence of composition, many-body effects, spin-orbit coupling, and disorder on magnetism of Co-Pt solid-state systems
O. Sipr, J. Minar, S. Mankovsky and H. Ebert
Physical Review B, Vol. 78, No. 14, 144403 (2008) (12 pages)

Element-specific gap in the p states for ternary semiconductors CuGaSe₂ and ZnGeAs₂ via alignment of x-ray emission and x-ray absorption spectra
J. Drahokoupil, O. Sipr and A. Simunek
J. Phys. Condens. Matter Vol. 20, No. 15, 155206 (2008) (6 pages)

Influence of temperature on the systematics of magnetic moments of free Fe clusters
O. Sipr, S. Polesya, J. Minar and H. Ebert
J. Phys. Condens. Matter Vol. 19, No. 44, 446205 (2007) (10 pages)

Influence of interdiffusion on the magnetic moments in Co/Au multilayers
O. Sipr, J. Minar, J. Vackar and H. Ebert
Physical Review B, Vol. 75, No. 13, 134422 (2007) (10 pages)

XMCD Spectra of Co Clusters on Au(111) by Ab-Initio Calculations
O. Sipr, J. Minar, S. Bornemann and H. Ebert
AIP Conference Proceedings Vol. 882, February 2007, 159-161

B K-Edge XANES of Superstructural Units in Borate Glasses
O. Sipr, A. Simunek and F. Rocca
AIP Conference Proceedings Vol. 882, February 2007, 446-448

Magnetic moments, exchange coupling, and crossover temperatures of Co clusters on Pt(111) and Au(111)
O. Sipr, S. Bornemann, J. Minar, S. Polesya, V. Popescu, A. Simunek and H. Ebert
J. Phys. Condes. Matter Vol. 19, No. 9, 096203 (2007) (21 pages)

Connection between spectral features of B K edge XANES of minerals and the local structure
O. Sipr, A. Simunek, J. Vackar, G. Dalba and F. Rocca
Phys. Chem. Glasses: Eur. J. Glass Sci. Technol. B, Vol. 47, No. 4, 412-418 (2006)

Magnetic properties of free Fe clusters at finite temperatures from first principles
S. Polesya, O. Sipr, S. Bornemann, J. Minar and H. Ebert
Europhysics Letters, Vol. 74, No. 6, 1074-1080 (2006)

X-ray absorption spectroscopy of strongly disordered glasses: local structure around Ag ions in g-Ag₂O.nB₂O₃
A. Kuzmin, G. Dalba, P. Fornasini, F. Rocca and O. Sipr
Physical Review B, Vol. 73, No. 17, 174110 (2006) (12 pages)

Magnetic properties of Co clusters deposited on Pt(111)
J. Minar, S. Bornemann, O. Sipr, S. Polesya and H. Ebert
Applied Physics A, Vol. 82, No. 1, 139-144 (2006)

Magnetic properties of Co clusters deposited on Pt(111) and Au(111)
S. Bornemann, J. Minar, S. Polesya, S. Mankovsky, H. Ebert and O. Sipr
Phase Transitions, Vol. 78, No. 9-11, 701-709 (2005)

Electronic and magnetic properties of free and supported transition metal clusters
H. Ebert, S. Bornemann, J. Minar, M. Kosuth, O. Sipr, P.H. Dederichs, R. Zeller and I. Cabria
Phase Transitions, Vol. 78, No. 1-3, 71-83 (2005)

Theoretical Fe L_2,3- and K-edge x-ray magnetic circular dichroism spectra of free iron clusters
O. Sipr and H. Ebert
Physical Review B, Vol. 72, No. 13, 134406 (2005) (11 pages)

Size- and site-dependence of XMCD spectra of iron clusters from ab-initio calculations
O. Sipr and H. Ebert
Physica Scripta, Vol. T115, 110-112 (2005)

Similarities and differences between XANES spectra at analogous edges of ternary semiconductors CuGaSe₂, ZnGeAs₂ and CuFeS₂
O. Sipr, J. Drahokoupil, P. Machek and A. Simunek
Physica Scripta, Vol. T115, 179-181 (2005)

XANES and EXAFS Modelling of Configurational Disorder in Silver Borate Glasses
G. Dalba, P. Fornasini, A. Kuzmin, F. Monti, A. Sanson, O. Sipr and F. Rocca
Physica Scripta, Vol. T115, 149-151 (2005)

Magnetic structure of free iron clusters compared to iron crystal surfaces
O. Sipr, M. Kosuth and H. Ebert
Physical Review B, Vol. 70, No. 17, 174423 (2004) (13 pages)

Magnetic structure of iron clusters and iron crystal surfaces
O. Sipr, M. Kosuth and H. Ebert
Surface Science Vol. 566-568 Part 1, 268-271 (2004)

Cu, Fe, and S K- and L-edge XANES spectra of CuFeS₂: Localization and interpretation of pre-peak states
O. Sipr, P. Machek and A. Simunek
Physical Review B, Vol. 69, No. 15, 155115 (2004) (11 pages)

Ab-initio calculation of magnetic structure of small iron nanoclusters
O. Sipr, M. Kosuth and H. Ebert
Journal of Magnetism and Magnetic Materials Vol. 272-276 Part 1, 713-714 (2004)

Ordered and disordered models of local structure around Ag cations in silver borate glasses based on x-ray absorption near-edge structure spectroscopy
O. Sipr, G. Dalba and F. Rocca
Physical Review B, Vol. 69, No. 13, 134201 (2004) (16 pages)

The local structure around Ag cations in silver borate glasses studied by XANES
O. Sipr, F. Rocca and G. Dalba
Phys. Chem. Glasses Vol. 44, No. 3, 252 (2003)
(You may try also this link or a general access to the Ingenta Select collection. The journal is published by Society of Glass Technology.)

Bulk and surface effects in x-ray magnetic circular dichroism of iron clusters.
O. Sipr and H. Ebert
Czechoslovak Journal of Physics, Vol. 53, No. 1, 55 (2003)
Another link to the journal page

Polarized x-ray absorption spectra of CuGeO₃ at the Cu and Ge K edges.
O. Sipr, A. Simunek, S. Bocharov and G. Drager
Physical Review B, Vol. 66, No. 15, 155119 (2002) (8 pages)

Spatial distribution of photoelectrons participating in formation of x-ray absorption spectra.
O. Sipr
Physical Review B, Vol. 65, No. 20, 205115 (2002) (11 pages)

Interpretation of polarized Cu K x-ray absorption near-edge-structure spectra of CuO.
O. Sipr and A. Simunek
Journal of Physics-Condensed Matter, Vol. 13, No. 37, 8519-8525 (2001)
Please note that there is a print error in the hard-copy version of this paper (a figure is missing). The official electronic version of the paper which is available on-line has been corrected.

Site dependence of the local density of unoccupied states - an aid for understanding trends in x-ray absoprtion fine structure.
O. Sipr
Journal of Physics-Condensed Matter, Vol. 13, No. 19, 4291-4302 (2001)

Polarized Cu K edge XANES spectra of CuO - theory and experiment.
O. Sipr, and A. Simunek, S. Bocharov, Th. Kirchner, G. Dräger
J. Synchrotron Rad., Vol. 8, No. 3, 235-237 (2001)

Probability density of wave function of excited photoelectron: Understanding XANES features.
O. Sipr
J. Synchrotron Rad., Vol. 8, No. 3, 232-234 (2001)

Dipole and quadrupole contributions to polarized Cu K x-ray absorption near-edge structure spectra of CuO.
S. Bocharov, Th. Kirchner, G. Dräger, O. Sipr, and A. Simunek
Physical Review B, Vol. 63, No. 3, 045104 (2001)

Geometric and electronic structure effects in polarized V K-edge absorption near-edge structure spectra of V₂O₅.
O. Sipr, A. Simunek, S. Bocharov, Th. Kirchner and G.Dräger
Physical Review B, Vol. 60, No. 20, 14115-14127 (1999)

Real-space multiple-scattering analysis of Ag L₁- and L₃-edge XANES spectra of Ag₂O.
O. Sipr, F. Rocca and G. Dalba
J. Synchrotron Rad., Vol. 6, No. 3, 770-772 (1999)

Polarized XANES spectra of titanium dichalcogenides - experiment and theory.
O. Sipr, A. Simunek, S. Bocharov, D. Heumann and G. Dräger
J. Synchrotron Rad., Vol. 6, No. 3, 518-520 (1999)

Electronic structure of silicon nitride.
R. Nietubyc, E. Sobczak, O. Sipr, J. Vackar and A. Simunek
Journal of Alloys and Compounds, Vol. 286, 148-152 (1999)

Polarized x-ray absorption spectra of TiS₂, TiSe₂, and TiTe₂.
S. Bocharov, G. Dräger, D. Heumann, A. Simunek and O. Sipr
Physical Review B, Vol. 58, No. 12, 7668-7674 (1998)

X-ray-absorption near-edge structure of CuGaSe₂ and ZnSe: Experiment and theory.
O. Sipr, P. Machek, A. Simunek, J. Vackar and J. Horak
Physical Review B, Vol. 56, No. 20, 13151-13161 (1997)

Unoccupied electron states of TiS₂ studied by means of polarized x-ray absorption.
A. Simunek, O. Sipr, S. Bocharov, D. Heumann and G. Drager
Physical Review B, Vol. 56, No. 19, 12232-12237 (1997)

BIS study of silicon nitride: Experiment and theory.
R. Nietubyc, E. Sobczak, O. Sipr, J. Vackar and A. Simunek
Journal de Physique IV (France), Vol. 7, Colloq. C2, C2-583-C2-584 (1997)

Partial probabilities of x-ray Bremsstrahlung transitions.
R. Nietubyc, E. Sobczak E, A. S. Nek, J. Vackar and O. Sipr
Acta Physica Polonica A, Vol. 91, No.5, 841-846 (1997)

Multiple-scattering-theory analysis of XANES spectra of SO₂ adsorbed on Cu(100).
O. Sipr, N. Pangher, L. Wilde, M. Polcik and J. Haase
Czechoslovak Journal of Physics, Vol. 47, No. 4, 467-471 (1997)

Andreev and normal reflections at normal metal - superconductor boundaries: Limitations of the semiclassical approximation.
O. Sipr, B. L. Gyorffy
Journal of Low Temperature Physics, Vol. 106, Nos. 3/4, 315-320 (1997)

Interpretation of bound states in inhomogeneous superconductors: the role of Andreev scattering.
O. Sipr, B. L. Gyorffy
Journal of Physics-Condensed Matter, Vol. 8, No. 2, 169-191 (1996)

Oscillatory magnetic coupling between metallic multilayers across superconducting spacers.
O. Sipr, B. L. Gyorffy
Journal of Physics-Condensed Matter, Vol. 7, No. 27, 5239-5269 (1995)

Real-space multiple-scattering analysis of x-ray absorption near-edge K-spectra of Cu₂O and CuO.
O. Sipr
Journal of Physics-Condensed Matter, Vol. 4, No. 47, 9389-9400 (1992)

Angle dependence of matrix-elements in x-ray bremsstrahlung isochromat spectroscopy.
O. Sipr
Journal of Physics-Condensed Matter, Vol. 3, No. 43, 8503-8510 (1991)

Integration of free free radiative-transition matrix-elements.
J. Vackar, A. Simunek, O. Sipr
Computer Physics Communications, Vol. 66, No. 2-3, 259-265 (1991)

Finite-cluster multiple-scattering theory of x-ray bremsstrahlung isochromat spectra.
O. Sipr, J. Vackar, A. Simunek
Physical Review B, Vol. 44, No. 10, 4832-4842 (1991)

Real-space, multiple-scattering-theory method for the calculation of x-ray bremsstrahlung isochromat spectra.
A. Simunek, O. Sipr, J. Vackar
Physical Review Letters, Vol. 63, No. 19, 2076-2079 (1989)