@article{7312, author = {{Beckel, Andreas and Zhou, Daming and Marquardt, Bastian and Reuter, Dirk and Wieck, Andreas D. and Geller, Martin and Lorke, Axel}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, number = {{23}}, publisher = {{AIP Publishing}}, title = {{{Momentum matching in the tunneling between 2-dimensional and 0-dimensional electron systems}}}, doi = {{10.1063/1.4728114}}, volume = {{100}}, year = {{2012}}, } @article{7313, author = {{Schwan, A. and Varwig, S. and Greilich, A. and Yakovlev, D. R. and Reuter, Dirk and Wieck, A. D. and Bayer, M.}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, number = {{23}}, publisher = {{AIP Publishing}}, title = {{{Non-resonant optical excitation of mode-locked electron spin coherence in (In,Ga)As/GaAs quantum dot ensemble}}}, doi = {{10.1063/1.4726264}}, volume = {{100}}, year = {{2012}}, } @article{7315, author = {{Buchholz, Sven S. and Sternemann, Elmar and Chiatti, Olivio and Reuter, Dirk and Wieck, Andreas D. and Fischer, Saskia F.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{23}}, publisher = {{American Physical Society (APS)}}, title = {{{Noise thermometry in narrow two-dimensional electron gas heat baths connected to a quasi-one-dimensional interferometer}}}, doi = {{10.1103/physrevb.85.235301}}, volume = {{85}}, year = {{2012}}, } @article{7324, author = {{Kurtze, H. and Yakovlev, D. R. and Reuter, Dirk and Wieck, A. D. and Bayer, M.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{19}}, publisher = {{American Physical Society (APS)}}, title = {{{Hyperfine interaction mediated exciton spin relaxation in (In,Ga)As quantum dots}}}, doi = {{10.1103/physrevb.85.195303}}, volume = {{85}}, year = {{2012}}, } @article{7325, author = {{Schuster, J and Kim, T Y and Batke, E and Reuter, Dirk and Wieck, A D}}, issn = {{0953-8984}}, journal = {{Journal of Physics: Condensed Matter}}, number = {{16}}, publisher = {{IOP Publishing}}, title = {{{Photoluminescence lineshape features of carbon δ-doped GaAs heterostructures}}}, doi = {{10.1088/0953-8984/24/16/165801}}, volume = {{24}}, year = {{2012}}, } @article{7326, author = {{Bryja, L. and Jadczak, J. and Wójs, A. and Bartsch, G. and Yakovlev, D. R. and Bayer, M. and Plochocka, P. and Potemski, M. and Reuter, Dirk and Wieck, A. D.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{16}}, publisher = {{American Physical Society (APS)}}, title = {{{Cyclotron-resonant exciton transfer between the nearly free and strongly localized radiative states of a two-dimensional hole gas in a high magnetic field}}}, doi = {{10.1103/physrevb.85.165308}}, volume = {{85}}, year = {{2012}}, } @article{7327, author = {{Huang, J. and Chen, Y. S. and Ludwig, A. and Reuter, Dirk and Wieck, A. D. and Bacher, G.}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, number = {{13}}, publisher = {{AIP Publishing}}, title = {{{Electron-nuclei spin coupling in GaAs—Free versus localized electrons}}}, doi = {{10.1063/1.3699261}}, volume = {{100}}, year = {{2012}}, } @article{7329, author = {{Houel, J. and Kuhlmann, A. V. and Greuter, L. and Xue, F. and Poggio, M. and Gerardot, B. D. and Dalgarno, P. A. and Badolato, A. and Petroff, P. M. and Ludwig, A. and Reuter, Dirk and Wieck, A. D. and Warburton, R. J.}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, number = {{10}}, publisher = {{American Physical Society (APS)}}, title = {{{Probing Single-Charge Fluctuations at aGaAs/AlAsInterface Using Laser Spectroscopy on a Nearby InGaAs Quantum Dot}}}, doi = {{10.1103/physrevlett.108.107401}}, volume = {{108}}, year = {{2012}}, } @article{7330, author = {{Chen, J. C. H. and Wang, D. Q. and Klochan, O. and Micolich, A. P. and Das Gupta, K. and Sfigakis, F. and Ritchie, D. A. and Reuter, Dirk and Wieck, A. D. and Hamilton, A. R.}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, number = {{5}}, publisher = {{AIP Publishing}}, title = {{{Fabrication and characterization of ambipolar devices on an undoped AlGaAs/GaAs heterostructure}}}, doi = {{10.1063/1.3673837}}, volume = {{100}}, year = {{2012}}, } @inproceedings{7334, author = {{Höpfner, Henning and Li, Mingyuan and Ludwig, Arne and Ludwig, Astrid and Stromberg, Frank and Wende, Heiko and Keune, Werner and Reuter, Dirk and Wieck, Andreas D. and Gerhardt, Nils C. and Hofmann, Martin R.}}, booktitle = {{Ultrafast Phenomena and Nanophotonics XVI}}, publisher = {{SPIE}}, title = {{{Room temperature spin relaxation in quantum dot based spin-optoelectronic devices}}}, doi = {{10.1117/12.907821}}, year = {{2012}}, } @article{7338, author = {{Li, Yan and Sinitsyn, N. and Smith, D. L. and Reuter, Dirk and Wieck, A. D. and Yakovlev, D. R. and Bayer, M. and Crooker, S. A.}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, number = {{18}}, publisher = {{American Physical Society (APS)}}, title = {{{Intrinsic Spin Fluctuations Reveal the Dynamical Response Function of Holes Coupled to Nuclear Spin Baths in (In,Ga)As Quantum Dots}}}, doi = {{10.1103/physrevlett.108.186603}}, volume = {{108}}, year = {{2012}}, } @article{7490, author = {{Ruth, Marcel and Meier, Cedrik}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{22}}, publisher = {{American Physical Society (APS)}}, title = {{{Scaling coefficient for three-dimensional grain coalescence of ZnO on Si(111)}}}, doi = {{10.1103/physrevb.86.224108}}, volume = {{86}}, year = {{2012}}, } @article{7491, author = {{Kröger, Philipp and Ruth, Marcel and Weber, Nils and Meier, Cedrik}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, number = {{26}}, publisher = {{AIP Publishing}}, title = {{{Carrier localization in ZnO quantum wires}}}, doi = {{10.1063/1.4731767}}, volume = {{100}}, year = {{2012}}, } @article{7492, author = {{Kampmeier, J. and Rashad, M. and Woggon, U. and Ruth, M. and Meier, Cedrik and Schikora, D. and Lischka, K. and Pawlis, A.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{15}}, publisher = {{American Physical Society (APS)}}, title = {{{Enhanced photoluminescence of colloidal nanocrystals embedded in epitaxially grown semiconductor microstructures}}}, doi = {{10.1103/physrevb.85.155405}}, volume = {{85}}, year = {{2012}}, } @article{4095, abstract = {{Aiming to diminish the reflection losses of glass covered light harvesting devices, the optical reflectivity of nanostructured glass surfaces is studied theoretically and experimentally. The work is inspired by the nanoscale roughness of insect eyes, which is tried to be replicated on a technical glass surface. To this end, the reflectivity of glass surfaces with topographies represented by linear, parabolic and Fermishaped glass/air fill factor profiles is calculated for normal incidence. It is shown that using the latter ones, an almost complete suppression of reflections can be achieved. A simple, self-organization technique to create such Fermi-shaped filling factor profiles in glass experimentally is also presented.}}, author = {{Achtelik, J. and Sievers, W. and Lindner, Jörg}}, issn = {{0921-5107}}, journal = {{Materials Science and Engineering: B}}, location = {{Straßburg (France)}}, number = {{9}}, pages = {{635--638}}, publisher = {{Elsevier BV}}, title = {{{Biomimetic approaches to create anti-reflection glass surfaces for solar cells using self-organizing techniques}}}, doi = {{10.1016/j.mseb.2012.10.014}}, volume = {{178}}, year = {{2012}}, } @article{4131, abstract = {{We report an anisotropic formation of defects in cubic GaN grown on nano-patterned 3C-SiC/Si (001) by molecular beam epitaxy. Nano-patterning of 3C-SiC/Si (001) is achieved by nanosphere lithography and a reactive ion etching process. Atomic force microscopy and scanning electron microscopy show that the selectivearea- grown cubic GaN nucleates in two structurally different domains, which most probably originate from the substrate. In adjacent domains the formation of defects, especially hexagonal inclusions, is different and leads to two different surface morphologies. The dominant phase within these domains was measured by electron backscatter diffraction. Optical properties were investigated by micro-photoluminescence and cathodoluminescence spectroscopy.}}, author = {{Kemper, R. M. and Häberlen, M. and Schupp, T. and Weinl, M. and Bürger, M. and Ruth, M. and Meier, Cedrik and Niendorf, T. and Maier, H. J. and Lischka, K. and As, D. J. and Lindner, Jörg}}, issn = {{1862-6351}}, journal = {{physica status solidi (c)}}, number = {{3-4}}, pages = {{1028--1031}}, publisher = {{Wiley}}, title = {{{Formation of defects in cubic GaN grown on nano-patterned 3C-SiC (001)}}}, doi = {{10.1002/pssc.201100174}}, volume = {{9}}, year = {{2012}}, } @inproceedings{4380, abstract = {{The structural and vibrational properties of lithium niobate (LN) – lithium tantalate (LT) mixed crystals (LNT, LiNb1-xTaxO3) are investigated over the whole composition range by first-principles simulations. The crystal volume grows roughly linearly from LT to LN, whereby the lattice parameters a and c show minor deviations from the Vegard behavior between the end compounds, LiNbO3 and LiTaO3. Our calculations in the framework of the density functional theory show the TO1, TO2 and TO4-modes to become harder with increasing Nb concentration. TO3 becomes softer with increasing Nb content, instead. The frequency shifts of the zone center A1-TO phonon modes for crystals with different compositions are found to be as large as 30 cm-1. Raman spectroscopy, which is sensitive to the A1 modes, can be therefore employed to determine the crystal composition.}}, author = {{Sanna, Simone and Riefer, Arthur and Neufeld, Sergej and Schmidt, Wolf Gero and Berth, Gerhard and Widhalm, Alex and Zrenner, Artur}}, booktitle = {{Proceedings of ISAF-ECAPD-PFM 2012}}, keywords = {{Ferroelectrics, Vibrational properties, LiNbO3, LiTaO3, Mixed Crystals}}, location = {{Aveiro, Portugal}}, title = {{{Vibrational fingerprints of LiNbO3-LiTaO3 mixed crystals}}}, year = {{2012}}, } @inbook{4381, abstract = {{Coherent physics and applications of exciton qubits in electric fi eld tunable quantum dot structures are our focus. Excitations with picosecond (ps) laser pulses result in qubit rotations. Using state projection by tunnelling the readout can be performed in quantitative way. As a function of electric fi eld induced detuning Ramsey fringes of a single exciton qubit can be observed and controlled for double pulse excitation. Therefore it is possible to demonstrate voltage controlled qubit manipulations within a wide range of pulse delays. Using fast electric signals, phase-locked to ps-laser pulses, the coherent control of an exciton qubit can be obtained by electric interaction. Such voltage controlled qubit manipulations seem to be essential for new types of optoelectronic quantum gates and novel applications in the fi eld of coherent optoelectronics.}}, author = {{Michaelis de Vasconcellos, Steffen and Gordon, Simon and Mantei, Dirk and Leier, Yves Alexander and Al-Hmoud, M. and Quiring, Wadim and Zrenner, Artur}}, booktitle = {{QUANTUM OPTICS WITH SEMICONDUCTOR NANOSTRUCTURES}}, editor = {{Jahnke, Frank}}, isbn = {{9780857092328 0857092324}}, keywords = {{excitons, quantum bits, coherent manipulation, Ramsey interference, quantum gate}}, pages = {{528--559}}, publisher = {{Woodhead Publishing}}, title = {{{Coherent optoelectronics with quantum dots}}}, year = {{2012}}, } @article{1711, author = {{Huang, Lingling and Chen, Xianzhong and Mühlenbernd, Holger and Li, Guixin and Bai, Benfeng and Tan, Qiaofeng and Jin, Guofan and Zentgraf, Thomas and Zhang, Shuang}}, issn = {{1530-6984}}, journal = {{Nano Letters}}, number = {{11}}, pages = {{5750--5755}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Dispersionless Phase Discontinuities for Controlling Light Propagation}}}, doi = {{10.1021/nl303031j}}, volume = {{12}}, year = {{2012}}, } @article{1712, author = {{Ye, Ziliang and Zhang, Shuang and Wang, Yuan and Park, Yong-Shik and Zentgraf, Thomas and Bartal, Guy and Yin, Xiaobo and Zhang, Xiang}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{15}}, publisher = {{American Physical Society (APS)}}, title = {{{Mapping the near-field dynamics in plasmon-induced transparency}}}, doi = {{10.1103/physrevb.86.155148}}, volume = {{86}}, year = {{2012}}, }