@inproceedings{45493, author = {{Goertz, Simon and Heinke, Heidrun and Riese, Josef and Stampfer, Christoph and Kuhlen, Sebastian}}, booktitle = {{PhyDid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung 2017 in Dresden}}, editor = {{Nordmeier, Volkhard and Grötzebauch, Helmuth}}, title = {{{Smartphone-Experimente zu gleichmäßig beschleunigten Bewegungen mit der App phyphox}}}, year = {{2017}}, } @inproceedings{45492, author = {{Götze, Benjamin and Heinke, Heidrun and Riese, Josef and Stampfer, Christoph and Kuhlen, Sebastian}}, booktitle = {{PhyDid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung 2017 in Dresden}}, editor = {{Nordmeier, Volkhard and Grötzebauch, Helmuth}}, title = {{{Smartphone-Experimente zu harmonischen Pendelschwingungen mit der App phyphox}}}, year = {{2017}}, } @inproceedings{45491, author = {{Riese, Josef and Rexing, Volker}}, booktitle = {{108. MNU-Bundeskongress. Deutscher Verein zur Förderung des mathematischen und naturwissenschaftlichen Unterrichts e.V. Konferenzband}}, editor = {{Jost, Steffen }}, pages = {{51--52}}, title = {{{Schwerpunkte: Technik}}}, year = {{2017}}, } @article{45547, author = {{Riese, Josef and Gramzow, Yvonne and Reinhold, Peter}}, journal = {{Zeitschrift für Didaktik der Naturwissenschaften}}, number = {{23}}, pages = {{99--112}}, title = {{{Das fachdidaktische Wissen von Anfängern und Fortgeschrittenen im Lehramtsstudiengang Physik}}}, year = {{2017}}, } @article{26040, author = {{Stefszky, Michael and Ricken, R. and Eigner, Christof and Quiring, V. and Herrmann, Harald and Silberhorn, Christine}}, issn = {{2331-7019}}, journal = {{Physical Review Applied}}, title = {{{Waveguide Cavity Resonator as a Source of Optical Squeezing}}}, doi = {{10.1103/physrevapplied.7.044026}}, year = {{2017}}, } @article{63736, author = {{Nunn, J. and Munns, J. H. D. and Thomas, S. and Kaczmarek, K. T. and Qiu, C. and Feizpour, A. and Poem, E. and Brecht, Benjamin and Saunders, D. J. and Ledingham, P. M. and Reddy, Dileep V. and Raymer, M. G. and Walmsley, I. A.}}, issn = {{2469-9926}}, journal = {{Physical Review A}}, number = {{1}}, publisher = {{American Physical Society (APS)}}, title = {{{Theory of noise suppression inΛ-type quantum memories by means of a cavity}}}, doi = {{10.1103/physreva.96.012338}}, volume = {{96}}, year = {{2017}}, } @article{63737, author = {{Thomas, S E and Munns, J H D and Kaczmarek, K T and Qiu, C and Brecht, Benjamin and Feizpour, A and Ledingham, P M and Walmsley, I A and Nunn, J and Saunders, D J}}, issn = {{1367-2630}}, journal = {{New Journal of Physics}}, number = {{6}}, publisher = {{IOP Publishing}}, title = {{{High efficiency Raman memory by suppressing radiation trapping}}}, doi = {{10.1088/1367-2630/aa7534}}, volume = {{19}}, year = {{2017}}, } @article{10023, abstract = {{We perform a comprehensive theoretical study of the structural and electronic properties of potassium niobate (KNbO3) in the cubic, tetragonal, orthorhombic, monoclinic, and rhombohedral phase, based on density-functional theory. The influence of different parametrizations of the exchange-correlation functional on the investigated properties is analyzed in detail, and the results are compared to available experimental data. We argue that the PBEsol and AM05 generalized gradient approximations as well as the RTPSS meta-generalized gradient approximation yield consistently accurate structural data for both the external and internal degrees of freedom and are overall superior to the local-density approximation or other conventional generalized gradient approximations for the structural characterization of KNbO3. Band-structure calculations using a HSE-type hybrid functional further indicate significant near degeneracies of band-edge states in all phases which are expected to be relevant for the optical response of the material.}}, author = {{Schmidt, Falko and Landmann, Marc and Rauls, Eva and Argiolas, Nicola and Sanna, Simone and Schmidt, Wolf Gero and Schindlmayr, Arno}}, issn = {{1687-8442}}, journal = {{Advances in Materials Science and Engineering}}, publisher = {{Hindawi}}, title = {{{Consistent atomic geometries and electronic structure of five phases of potassium niobate from density-functional theory}}}, doi = {{10.1155/2017/3981317}}, volume = {{2017}}, year = {{2017}}, } @article{13353, author = {{Lewandowski, Przemyslaw and Luk, Samuel M. H. and Chan, Chris K. P. and Leung, P. T. and Kwong, N. H. and Binder, Rolf and Schumacher, Stefan}}, issn = {{1094-4087}}, journal = {{Optics Express}}, number = {{25}}, title = {{{Directional optical switching and transistor functionality using optical parametric oscillation in a spinor polariton fluid}}}, doi = {{10.1364/oe.25.031056}}, volume = {{25}}, year = {{2017}}, } @article{13354, author = {{Luk, S. M. H. and Kwong, N. H. and Lewandowski, P. and Schumacher, Stefan and Binder, R.}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, number = {{11}}, title = {{{Optically Controlled Orbital Angular Momentum Generation in a Polaritonic Quantum Fluid}}}, doi = {{10.1103/physrevlett.119.113903}}, volume = {{119}}, year = {{2017}}, } @article{13364, author = {{Kwong, N H and Tsang, C Y and Luk, Samuel M H and Tse, Y C and Chan, Chris K P and Lewandowski, P and Leung, P T and Schumacher, Stefan and Binder, R}}, issn = {{0031-8949}}, journal = {{Physica Scripta}}, title = {{{Optical switching of polariton density patterns in a semiconductor microcavity}}}, doi = {{10.1088/1402-4896/aa58f6}}, year = {{2017}}, } @article{13360, author = {{Wiebeler, Christian and Plasser, Felix and Hedley, Gordon J. and Ruseckas, Arvydas and Samuel, Ifor D. W. and Schumacher, Stefan}}, issn = {{1948-7185}}, journal = {{The Journal of Physical Chemistry Letters}}, pages = {{1086--1092}}, title = {{{Ultrafast Electronic Energy Transfer in an Orthogonal Molecular Dyad}}}, doi = {{10.1021/acs.jpclett.7b00089}}, year = {{2017}}, } @article{10021, abstract = {{The optical properties of pristine and titanium-doped LiNbO3 are modeled from first principles. The dielectric functions are calculated within time-dependent density-functional theory, and a model long-range contribution is employed for the exchange-correlation kernel in order to account for the electron-hole binding. Our study focuses on the influence of substitutional titanium atoms on lithium sites. We show that an increasing titanium concentration enhances the values of the refractive indices and the reflectivity.}}, author = {{Friedrich, Michael and Schmidt, Wolf Gero and Schindlmayr, Arno and Sanna, Simone}}, issn = {{2475-9953}}, journal = {{Physical Review Materials}}, number = {{3}}, publisher = {{American Physical Society}}, title = {{{Optical properties of titanium-doped lithium niobate from time-dependent density-functional theory}}}, doi = {{10.1103/PhysRevMaterials.1.034401}}, volume = {{1}}, year = {{2017}}, } @article{13424, author = {{Aldahhak, Hazem and Paszkiewicz, M. and Allegretti, F. and Duncan, D. A. and Tebi, S. and Deimel, P. S. and Casado Aguilar, P. and Zhang, Y.-Q. and Papageorgiou, A. C. and Koch, R. and Barth, J. V. and Schmidt, Wolf Gero and Müllegger, S. and Schöfberger, W. and Klappenberger, F. and Rauls, E. and Gerstmann, Uwe}}, issn = {{1932-7447}}, journal = {{The Journal of Physical Chemistry C}}, pages = {{2192--2200}}, title = {{{X-ray Spectroscopy of Thin Film Free-Base Corroles: A Combined Theoretical and Experimental Characterization}}}, doi = {{10.1021/acs.jpcc.6b09935}}, volume = {{121}}, year = {{2017}}, } @article{13423, author = {{Tebi, Stefano and Paszkiewicz, Mateusz and Aldahhak, Hazem and Allegretti, Francesco and Gonglach, Sabrina and Haas, Michael and Waser, Mario and Deimel, Peter S. and Aguilar, Pablo Casado and Zhang, Yi-Qi and Papageorgiou, Anthoula C. and Duncan, David A. and Barth, Johannes V. and Schmidt, Wolf Gero and Koch, Reinhold and Gerstmann, Uwe and Rauls, Eva and Klappenberger, Florian and Schöfberger, Wolfgang and Müllegger, Stefan}}, issn = {{1936-0851}}, journal = {{ACS Nano}}, pages = {{3383--3391}}, title = {{{On-Surface Site-Selective Cyclization of Corrole Radicals}}}, doi = {{10.1021/acsnano.7b00766}}, year = {{2017}}, } @article{13426, author = {{Edler, F. and Miccoli, I. and Stöckmann, J. P. and Pfnür, H. and Braun, Christian and Neufeld, Sergej and Sanna, S. and Schmidt, Wolf Gero and Tegenkamp, C.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{12}}, title = {{{Tuning the conductivity along atomic chains by selective chemisorption}}}, doi = {{10.1103/physrevb.95.125409}}, volume = {{95}}, year = {{2017}}, } @article{13427, author = {{Nozaki, Daijiro and Lücke, Andreas and Schmidt, Wolf Gero}}, issn = {{1948-7185}}, journal = {{The Journal of Physical Chemistry Letters}}, pages = {{727--732}}, title = {{{Molecular Orbital Rule for Quantum Interference in Weakly Coupled Dimers: Low-Energy Giant Conductivity Switching Induced by Orbital Level Crossing}}}, doi = {{10.1021/acs.jpclett.6b02989}}, year = {{2017}}, } @article{13425, author = {{Rohrmüller, M. and Schmidt, Wolf Gero and Gerstmann, Uwe}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{12}}, title = {{{Electron paramagnetic resonance calculations for hydrogenated Si surfaces}}}, doi = {{10.1103/physrevb.95.125310}}, volume = {{95}}, year = {{2017}}, } @article{13416, abstract = {{The optical properties of congruent lithium niobate are analyzed from first principles. The dielectric function of the material is calculated within time-dependent density-functional theory. The effects of isolated intrinsic defects and defect pairs, including the NbLi4+ antisite and the NbLi4+−NbNb4+ pair, commonly addressed as a bound polaron and bipolaron, respectively, are discussed in detail. In addition, we present further possible realizations of polaronic and bipolaronic systems. The absorption feature around 1.64 eV, ascribed to small bound polarons [O. F. Schirmer et al., J. Phys.: Condens. Matter 21, 123201 (2009)], is nicely reproduced within these models. Among the investigated defects, we find that the presence of bipolarons at bound interstitial-vacancy pairs NbV−VLi can best explain the experimentally observed broad absorption band at 2.5 eV. Our results provide a microscopic model for the observed optical spectra and suggest that, besides NbLi antisites and Nb and Li vacancies, Nb interstitials are also formed in congruent lithium-niobate samples.}}, author = {{Friedrich, Michael and Schmidt, Wolf Gero and Schindlmayr, Arno and Sanna, Simone}}, issn = {{2475-9953}}, journal = {{Physical Review Materials}}, number = {{5}}, publisher = {{American Physical Society}}, title = {{{Polaron optical absorption in congruent lithium niobate from time-dependent density-functional theory}}}, doi = {{10.1103/PhysRevMaterials.1.054406}}, volume = {{1}}, year = {{2017}}, } @article{13419, author = {{Frigge, T. and Hafke, B. and Witte, T. and Krenzer, B. and Streubühr, C. and Samad Syed, A. and Mikšić Trontl, V. and Avigo, I. and Zhou, P. and Ligges, M. and von der Linde, D. and Bovensiepen, U. and Horn-von Hoegen, M. and Wippermann, S. and Lücke, A. and Sanna, S. and Gerstmann, Uwe and Schmidt, Wolf Gero}}, issn = {{0028-0836}}, journal = {{Nature}}, pages = {{207--211}}, title = {{{Optically excited structural transition in atomic wires on surfaces at the quantum limit}}}, doi = {{10.1038/nature21432}}, volume = {{544}}, year = {{2017}}, }