@inproceedings{44067, abstract = {{Semiconductor nanostructures always contain a certain degree of disorder due to interface roughness and/or alloy disorder. The disorder has significant influence on the optical properties, e.g., excitonic absorption spectra. An adaptive wavelet approach for the solution of the excitonic Schroedinger equation, i.e., the semiconductor Bloch equation for the interband coherence linear in the external field, has been developed and applied to compute absorption spectra and/or wave functions. Results obtained for a thin GaAs semiconductor quantum wire considering a number of different model disorder potentials are presented and discussed.}}, author = {{Meier, Torsten and Mollet, Christian and Kunoth, Angela}}, booktitle = {{DPG Spring meeting 2010}}, issn = {{ 0420-0195}}, location = {{Regensburg, Germany}}, number = {{3}}, title = {{{A numerical adaptive wavelet approach to excitonic absorption spectra of disordered semiconductor nanostructures}}}, volume = {{45}}, year = {{2010}}, } @inproceedings{44065, abstract = {{The behavior of waveguide plasmon polaritons is studied employing ultrafast coherent control like schemes for a gold lattice coupled to a photonic waveguide for the structure. Different models to describe the third-harmonic generation are presented and the resulting equations are solved numerically. The calculations are compared to recent experimental data and show good agreement for the most prominent features in the time-integrated third order intensity.}}, author = {{Meier, Torsten and Podzimski, Reinold and Reichelt, Matthias and Utikal, Tobias and Giessen, Harald}}, booktitle = {{DPG Spring meeting 2010}}, issn = {{0420-0195}}, location = {{Regensburg, Germany}}, number = {{3}}, title = {{{Controlling the third-harmonic generation in a metallic photonic crystal coupled to a waveguide}}}, volume = {{45}}, year = {{2010}}, } @inproceedings{44066, abstract = {{We present a joint theoretical study of the optical properties of GaAs and AlAs bulk and heterostructures. Thereby, we compare the theoretical description of optical excitation on several levels of theory. Results obtained from kp theory are discussed along with data from ab initio calculations within the frameworks of independent-particle (DFT), independent quasiparticle (GW), or Coulomb-correlated quasiparticle (BSE) approximation.}}, author = {{Meier, Torsten and Landmann, Marc and Pochwala, Michal and Foerstner, Jens and Rauls, Eva and Schmidt, Wolf Gero}}, booktitle = {{DPG Spring meeting 2010}}, issn = {{0420-0195}}, location = {{Regensburg, Germany}}, number = {{3}}, title = {{{Theoretical description of optical properties in III-V semiconductor nanostructures}}}, volume = {{45}}, year = {{2010}}, } @article{45294, author = {{Riese, Josef}}, journal = {{PhyDid – Physik und Didaktik in Schule und Hochschule}}, pages = {{25--33}}, title = {{{Empirische Erkenntnisse zur Wirksamkeit der universitären Lehrerbildung – Indizien für notwendige Veränderungen der fachlichen Ausbildung von Physiklehrkräften}}}, volume = {{9}}, year = {{2010}}, } @article{45293, author = {{Riese, Josef and Reinhold, Peter}}, journal = {{Zeitschrift für Didaktik der Naturwissenschaften}}, pages = {{167--187}}, title = {{{Empirische Erkenntnisse zur Struktur professioneller Handlungskompetenz von angehenden Physiklehrkräften}}}, volume = {{16}}, year = {{2010}}, } @article{45292, author = {{Borowski, Andreas and Riese, Josef}}, journal = {{Praxis der Naturwissenschaften Physik in der Schule}}, number = {{5}}, pages = {{5--8}}, title = {{{Physikalisch-fachdidaktisches Wissen – Was kommt in der Praxis an?}}}, volume = {{59}}, year = {{2010}}, } @inproceedings{45540, author = {{Borowski, Andreas and Fischer, Hans and Olszewski, Jennifer and Reinhold, Peter and Riese, Josef}}, booktitle = {{Entwicklung naturwissenschaftlichen Denkens zwischen Phänomen und Systematik. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Dresden 2009}}, editor = {{Höttecke, Dietmar}}, pages = {{377--379}}, title = {{{Ein Vergleich von Tests zum fachdidaktischen Wissen von Physiklehrkräften}}}, year = {{2010}}, } @inproceedings{45541, author = {{Borowski, Andreas and Fischer, Hans and Olszewski, Jennifer and Reinhold, Peter and Riese, Josef and Vogelsang, Christoph}}, booktitle = {{Entwicklung naturwissenschaftlichen Denkens zwischen Phänomen und Systematik. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Dresden 2009}}, editor = {{Höttecke, Dietmar}}, pages = {{365--367}}, title = {{{Professionswissen von Physiklehrkräften}}}, year = {{2010}}, } @inproceedings{45542, author = {{Riese, Josef and Reinhold, Peter}}, booktitle = {{Entwicklung naturwissenschaftlichen Denkens zwischen Phänomen und Systematik. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Dresden 2009}}, editor = {{Höttecke, Dietmar}}, pages = {{368--370}}, title = {{{Entwicklung und Struktur Physik-bezogener Kompetenz im Lehramtsstudium}}}, year = {{2010}}, } @inproceedings{45539, author = {{Riese, Josef and Reinhold, Peter}}, booktitle = {{Contemporary science education research: teaching}}, editor = {{Taşar, Mehmet Fatih and Çakmakci, Gültekin}}, pages = {{79--85; 91--94}}, title = {{{Measuring physics student teachers’ pedagogical content knowledge as an indicator of their professional action competence}}}, year = {{2010}}, } @article{13581, author = {{Wippermann, S. and Schmidt, Wolf Gero and Bechstedt, F. and Chandola, S. and Hinrichs, K. and Gensch, M. and Esser, N. and Fleischer, K. and McGilp, J. F.}}, issn = {{1862-6351}}, journal = {{physica status solidi (c)}}, number = {{2}}, pages = {{133--136}}, title = {{{Optical anisotropy of Si(111)-(4 × 1)/(8 × 2)-In nanowires calculated fromfirst-principles}}}, doi = {{10.1002/pssc.200982413}}, volume = {{7}}, year = {{2010}}, } @article{13573, abstract = {{Given the vast range of lithium niobate (LiNbO3) applications, the knowledge about its electronic and optical properties is surprisingly limited. The direct band gap of 3.7 eV for the ferroelectric phase – frequently cited in the literature – is concluded from optical experiments. Recent theoretical investigations show that the electronic band‐structure and optical properties are very sensitive to quasiparticle and electron‐hole attraction effects, which were included using the GW approximation for the electron self‐energy and the Bethe‐Salpeter equation respectively, both based on a model screening function. The calculated fundamental gap was found to be at least 1 eV larger than the experimental value. To resolve this discrepancy we performed first‐principles GW calculations for lithium niobate using the full‐potential linearized augmented plane‐wave (FLAPW) method. Thereby we use the parameter‐free random phase approximation for a realistic description of the nonlocal and energydependent screening. This leads to a band gap of about 4.7 (4.2) eV for ferro(para)‐electric lithium niobate.}}, author = {{Thierfelder, Christian and Sanna, Simone and Schindlmayr, Arno and Schmidt, Wolf Gero}}, issn = {{1610-1642}}, journal = {{Physica Status Solidi C}}, location = {{Weimar}}, number = {{2}}, pages = {{362--365}}, publisher = {{Wiley-VCH}}, title = {{{Do we know the band gap of lithium niobate?}}}, doi = {{10.1002/pssc.200982473}}, volume = {{7}}, year = {{2010}}, } @article{13574, author = {{Gerstmann, Uwe and Rohrmüller, M. and Mauri, F. and Schmidt, Wolf Gero}}, issn = {{1862-6351}}, journal = {{physica status solidi (c)}}, number = {{2}}, pages = {{157--160}}, title = {{{Ab initiog-tensor calculation for paramagnetic surface states: hydrogen adsorption at Si surfaces}}}, doi = {{10.1002/pssc.200982462}}, volume = {{7}}, year = {{2010}}, } @article{13656, author = {{Bihler, C. and Gerstmann, Uwe and Hoeb, M. and Graf, T. and Gjukic, M. and Schmidt, Wolf Gero and Stutzmann, M. and Brandt, M. S.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{20}}, title = {{{Manganese-hydrogen complexes inGa1−xMnxN}}}, doi = {{10.1103/physrevb.80.205205}}, volume = {{80}}, year = {{2010}}, } @article{62930, author = {{Schumacher, Stefan and Galbraith, Ian and Ruseckas, Arvydas and Turnbull, Graham A. and Samuel, Ifor D. W.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{24}}, publisher = {{American Physical Society (APS)}}, title = {{{Dynamics of photoexcitation and stimulated optical emission in conjugated polymers: A multiscale quantum-chemistry and Maxwell-Bloch-equations approach}}}, doi = {{10.1103/physrevb.81.245407}}, volume = {{81}}, year = {{2010}}, } @article{13839, author = {{Blankenburg, S. and Schmidt, Wolf Gero}}, issn = {{1862-6351}}, journal = {{physica status solidi (c)}}, number = {{2}}, pages = {{415--417}}, title = {{{Temperature dependent stability of self-assembled molecular rows}}}, doi = {{10.1002/pssc.200982460}}, volume = {{7}}, year = {{2010}}, } @article{13838, author = {{Sanna, Simone and Schmidt, Wolf Gero}}, issn = {{1862-6351}}, journal = {{physica status solidi (c)}}, number = {{7-8}}, pages = {{2272--2274}}, title = {{{GaN growth on LiNbO3 (0001) - a first-principles simulation}}}, doi = {{10.1002/pssc.200983649}}, volume = {{7}}, year = {{2010}}, } @article{13837, abstract = {{In non-annealed 6H-SiC samples that were electron irradiated at room temperature, a new EPR signal due to a S=1 defect center with exceptionally large zero-field splitting (D = +652•10-4 cm-1) has been observed under illumination. A positive sign of D demonstrates that the spin-orbit contribution to the zero-field splitting exceeds by far that of the spin-spin interaction. A principal axis of the fine structure tilted by 59° against the crystal c-axis as well as the exceptionally high zero-field splitting D can be qualitatively understood by the occurrence of additional close-lying defect levels in defect clusters resulting in comparatively large second-order spin-orbit coup¬ling. A tentative assignment to vacancy clusters is supported by the observed annealing behavior. }}, author = {{Scholle, Andreas and Greulich-Weber, Siegmund and Rauls, Eva and Schmidt, Wolf Gero and Gerstmann, Uwe}}, issn = {{1662-9752}}, journal = {{Materials Science Forum}}, pages = {{403--406}}, title = {{{Fine Structure of Triplet Centers in Room Temperature Irradiated 6H-SiC}}}, doi = {{10.4028/www.scientific.net/msf.645-648.403}}, volume = {{645-648}}, year = {{2010}}, } @article{13843, author = {{Wippermann, S. and Schmidt, Wolf Gero and Thissen, P. and Grundmeier, Guido}}, issn = {{1862-6351}}, journal = {{physica status solidi (c)}}, number = {{2}}, pages = {{137--140}}, title = {{{Dissociative and molecular adsorption of water onα-Al2O3(0001)}}}, doi = {{10.1002/pssc.200982423}}, volume = {{7}}, year = {{2010}}, } @article{13836, author = {{Rauls, E. and Blankenburg, S. and Schmidt, Wolf Gero}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{12}}, title = {{{Chemical reactivity on surfaces: Modeling the imide synthesis from DATP and PTCDA on Au(111)}}}, doi = {{10.1103/physrevb.81.125401}}, volume = {{81}}, year = {{2010}}, }