TY - JOUR AB - We investigate the interplay between geometrical lattice resonances and surface plasmons mediating the emission of Smith-Purcell visible light via angle-resolved cathodoluminescence spectroscopy. We observe strong modulations in the dispersion curves of Smith-Purcell radiation (SPR) when they intersect the surface plasmons of silver gratings using a 200-kV transmission electron microscope. The decay of the plasmons away from the grating is directly probed by controlling the electron-beam position relative to the sample surface with nanometer precision. Our measurements are in excellent agreement with numerical simulations, clearly revealing the presence of characteristic Fano profiles resulting from the interference of the light continuum and the discrete plasmon states for each direction of emission. The intensity anomaly in the SPR emission pattern can be well explained from the geometrical consideration of the intersections between the dispersion planes of the SPR and surface plasmon polariton (SPP). A strong and directional SPR beam can be realized under the condition that the SPR dispersion plane comes in contact with the band edge of the SPP dispersion plane. AU - Yamamoto, Naoki AU - Javier García de Abajo, F. AU - Myroshnychenko, Viktor ID - 4409 IS - 12 JF - Physical Review B SN - 1098-0121 TI - Interference of surface plasmons and Smith-Purcell emission probed by angle-resolved cathodoluminescence spectroscopy VL - 91 ER - TY - JOUR AU - Debus, J. AU - Kudlacik, D. AU - Sapega, V. F. AU - Dunker, D. AU - Bohn, P. AU - Paßmann, F. AU - Braukmann, D. AU - Rautert, J. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 7218 IS - 19 JF - Physical Review B SN - 1098-0121 TI - Nuclear spin polarization in the electron spin-flip Raman scattering of singly charged (In,Ga)As/GaAs quantum dots VL - 92 ER - TY - JOUR AU - Finke, A. AU - Ruth, M. AU - Scholz, S. AU - Ludwig, A. AU - Wieck, A. D. AU - Reuter, Dirk AU - Pawlis, A. ID - 7222 IS - 3 JF - Physical Review B SN - 1098-0121 TI - Extending the spectral range of CdSe/ZnSe quantum wells by strain engineering VL - 91 ER - TY - JOUR AB - An electric field applied to a semiconductor reduces its crystal symmetry and modifies its electronic structure which is expected to result in changes of the linear and nonlinear response to optical excitation. In GaAs, we observe experimentally strong electric field effects on the optical second (SHG) and third (THG) harmonic generation. The SHG signal for the laser-light k vector parallel to the [001] crystal axis is symmetry forbidden in the electric-dipole approximation, but can be induced by an applied electric field in the vicinity of the 1s exciton energy. Surprisingly, the THG signal, which is allowed in this geometry, is considerably reduced by the electric field. We develop a theory which provides good agreement with the experimental data. In particular, it shows that the optical nonlinearities for the 1s exciton resonance are modified in an electric field by the Stark effect, which mixes the 1s and 2p exciton states of opposite parity. This mixing acts in opposite way on the SHG and THG processes, as it leads to the appearance of forbidden SHG in (001)-oriented GaAs and decreases the crystallographic THG. AU - Brunne, D. AU - Lafrentz, M. AU - Pavlov, V. V. AU - Pisarev, R. V. AU - Rodina, A. V. AU - Yakovlev, D. R. AU - Bayer, M. ID - 6522 IS - 8 JF - Physical Review B SN - 1098-0121 TI - Electric field effect on optical harmonic generation at the exciton resonances in GaAs VL - 92 ER - TY - JOUR AU - Schmutzler, Johannes AU - Lewandowski, Przemyslaw AU - Aßmann, Marc AU - Niemietz, Dominik AU - Schumacher, Stefan AU - Kamp, Martin AU - Schneider, Christian AU - Höfling, Sven AU - Bayer, Manfred ID - 15859 JF - Physical Review B SN - 1098-0121 TI - All-optical flow control of a polariton condensate using nonresonant excitation ER - TY - JOUR AU - Landmann, M. AU - Rauls, E. AU - Schmidt, Wolf Gero AU - Neumann, M. D. AU - Speiser, E. AU - Esser, N. ID - 10027 JF - Physical Review B SN - 1098-0121 TI - GaNm-plane: Atomic structure, surface bands, and optical response ER - TY - JOUR AU - Li, Yanlu AU - Schmidt, Wolf Gero AU - Sanna, Simone ID - 10031 JF - Physical Review B SN - 1098-0121 TI - Defect complexes in congruentLiNbO3and their optical signatures ER - TY - JOUR AU - Müllegger, Stefan AU - Rauls, Eva AU - Gerstmann, Uwe AU - Tebi, Stefano AU - Serrano, Giulia AU - Wiespointner-Baumgarthuber, Stefan AU - Schmidt, Wolf Gero AU - Koch, Reinhold ID - 13493 IS - 22 JF - Physical Review B SN - 1098-0121 TI - Mechanism for nuclear and electron spin excitation by radio frequency current VL - 92 ER - TY - JOUR AU - Edler, F. AU - Miccoli, I. AU - Demuth, S. AU - Pfnür, H. AU - Wippermann, S. AU - Lücke, A. AU - Schmidt, Wolf Gero AU - Tegenkamp, C. ID - 13496 IS - 8 JF - Physical Review B SN - 1098-0121 TI - Interwire coupling forIn(4×1)/Si(111) probed by surface transport VL - 92 ER - TY - JOUR AU - Klein, C. AU - Vollmers, N. J. AU - Gerstmann, Uwe AU - Zahl, P. AU - Lükermann, D. AU - Jnawali, G. AU - Pfnür, H. AU - Tegenkamp, C. AU - Sutter, P. AU - Schmidt, Wolf Gero AU - Horn-von Hoegen, M. ID - 13502 IS - 19 JF - Physical Review B SN - 1098-0121 TI - Barrier-free subsurface incorporation of 3d metal atoms into Bi(111) films VL - 91 ER - TY - JOUR AU - Sanson, A. AU - Zaltron, A. AU - Argiolas, N. AU - Sada, C. AU - Bazzan, M. AU - Schmidt, Wolf Gero AU - Sanna, S. ID - 13506 JF - Physical Review B SN - 1098-0121 TI - Polaronic deformation at theFe2+/3+impurity site inFe:LiNbO3crystals VL - 91 ER - TY - JOUR AU - Landmann, M. AU - Rauls, E. AU - Schmidt, Wolf Gero AU - Neumann, M. D. AU - Speiser, E. AU - Esser, N. ID - 13507 JF - Physical Review B SN - 1098-0121 TI - GaNm-plane: Atomic structure, surface bands, and optical response VL - 91 ER - TY - JOUR AU - Ma, Xuekai AU - Chestnov, I. Yu. AU - Charukhchyan, M. V. AU - Alodjants, A. P. AU - Egorov, O. A. ID - 31943 IS - 21 JF - Physical Review B KW - Condensed Matter Physics KW - Electronic KW - Optical and Magnetic Materials SN - 1098-0121 TI - Oscillatory dynamics of nonequilibrium dissipative exciton-polariton condensates in weak-contrast lattices VL - 91 ER - TY - JOUR AU - Liew, T. C. H. AU - Egorov, O. A. AU - Matuszewski, M. AU - Kyriienko, O. AU - Ma, Xuekai AU - Ostrovskaya, E. A. ID - 31944 IS - 8 JF - Physical Review B KW - Condensed Matter Physics KW - Electronic KW - Optical and Magnetic Materials SN - 1098-0121 TI - Instability-induced formation and nonequilibrium dynamics of phase defects in polariton condensates VL - 91 ER - TY - JOUR AB - LiTaO3 and LiNbO3 crystals are investigated here in a combined experimental and theoretical study that uses Raman spectroscopy in a complete set of scattering geometries and corresponding density-functional theory calculations to provide microscopic information on their vibrational properties. The Raman scattering efficiency is computed from first principles in order to univocally assign the measured Raman peaks to the calculated eigenvectors. Measured and calculated Raman spectra are shown to be in qualitative agreement and confirm the mode assignment by Margueron et al. [J. Appl. Phys. 111, 104105 (2012)], thus finally settling a long debate. While the two crystals show rather similar vibrational properties overall, the E-TO9 mode is markedly different in the two oxides. The deviations are explained by a different anion-cation bond type in LiTaO3 and LiNbO3 crystals. AU - Sanna, Simone AU - Neufeld, Sergej AU - Rüsing, Michael AU - Berth, Gerhard AU - Zrenner, Artur AU - Schmidt, Wolf Gero ID - 4332 IS - 22 JF - Physical Review B SN - 1098-0121 TI - Raman scattering efficiency in LiTaO3 and LiNbO3 crystals VL - 91 ER - TY - JOUR AU - Schüler, B. AU - Cerchez, M. AU - Xu, Hengyi AU - Schluck, J. AU - Heinzel, T. AU - Reuter, Dirk AU - Wieck, A. D. ID - 7225 IS - 20 JF - Physical Review B SN - 1098-0121 TI - Observation of quantum states without a semiclassical equivalence bound by a magnetic field gradient VL - 90 ER - TY - JOUR AU - Debus, J. AU - Sapega, V. F. AU - Dunker, D. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 7226 IS - 23 JF - Physical Review B SN - 1098-0121 TI - Spin-flip Raman scattering of the resident electron in singly charged (In,Ga)As/GaAs quantum dot ensembles VL - 90 ER - TY - JOUR AU - Varwig, S. AU - Evers, E. AU - Greilich, A. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 7227 IS - 12 JF - Physical Review B SN - 1098-0121 TI - All-optical implementation of a dynamic decoupling protocol for hole spins in (In,Ga)As quantum dots VL - 90 ER - TY - JOUR AU - Varwig, S. AU - Yugova, I. A. AU - René, A. AU - Kazimierczuk, T. AU - Greilich, A. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 7228 IS - 12 JF - Physical Review B SN - 1098-0121 TI - Excitation of complex spin dynamics patterns in a quantum-dot electron spin ensemble VL - 90 ER - TY - JOUR AU - Carrad, D. J. AU - Burke, A. M. AU - Klochan, O. AU - See, A. M. AU - Hamilton, A. R. AU - Rai, A. AU - Reuter, Dirk AU - Wieck, A. D. AU - Micolich, A. P. ID - 7233 IS - 15 JF - Physical Review B SN - 1098-0121 TI - Determining the stability and activation energy of Si acceptors in AlGaAs using quantum interference in an open hole quantum dot VL - 89 ER - TY - JOUR AU - Kuznetsova, M. S. AU - Flisinski, K. AU - Gerlovin, I. Ya. AU - Petrov, M. Yu. AU - Ignatiev, I. V. AU - Verbin, S. Yu. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 7234 IS - 12 JF - Physical Review B SN - 1098-0121 TI - Nuclear magnetic resonances in (In,Ga)As/GaAs quantum dots studied by resonant optical pumping VL - 89 ER - TY - JOUR AU - Varwig, S. AU - René, A. AU - Economou, Sophia E. AU - Greilich, A. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Reinecke, T. L. AU - Bayer, M. ID - 7235 IS - 8 JF - Physical Review B SN - 1098-0121 TI - All-optical tomography of electron spins in (In,Ga)As quantum dots VL - 89 ER - TY - JOUR AU - Sergent, S. AU - Kako, S. AU - Bürger, M. AU - Schupp, T. AU - As, Donat Josef AU - Arakawa, Y. ID - 8762 JF - Physical Review B SN - 1098-0121 TI - Polarization properties of single zinc-blende GaN/AlN quantum dots ER - TY - JOUR AU - Oh, Deok Mahn AU - Wippermann, S. AU - Schmidt, Wolf Gero AU - Yeom, Han Woong ID - 13509 IS - 15 JF - Physical Review B SN - 1098-0121 TI - Oxygen adsorbates on the Si(111)4×1-In metallic atomic wire: Scanning tunneling microscopy and density-functional theory calculations VL - 90 ER - TY - JOUR AU - Gerstmann, Uwe AU - Vollmers, N. J. AU - Lücke, A. AU - Babilon, M. AU - Schmidt, Wolf Gero ID - 13513 IS - 16 JF - Physical Review B SN - 1098-0121 TI - Rashba splitting and relativistic energy shifts in In/Si(111) nanowires VL - 89 ER - TY - JOUR AU - Li, Yanlu AU - Schmidt, Wolf Gero AU - Sanna, S. ID - 13514 IS - 9 JF - Physical Review B SN - 1098-0121 TI - IntrinsicLiNbO3point defects from hybrid density functional calculations VL - 89 ER - TY - JOUR AU - Sanna, S. AU - Schmidt, Wolf Gero AU - Rode, S. AU - Klassen, S. AU - Kühnle, A. ID - 13516 IS - 7 JF - Physical Review B SN - 1098-0121 TI - Unraveling theLiNbO3X-cut surface by atomic force microscopy and density functional theory VL - 89 ER - TY - JOUR AU - Sigurdsson, H. AU - Egorov, O. A. AU - Ma, Xuekai AU - Shelykh, I. A. AU - Liew, T. C. H. ID - 31945 IS - 1 JF - Physical Review B KW - Condensed Matter Physics KW - Electronic KW - Optical and Magnetic Materials SN - 1098-0121 TI - Information processing with topologically protected vortex memories in exciton-polariton condensates VL - 90 ER - TY - JOUR AB - Starting from the extended Su-Schrieffer-Heeger model, multiband semiconductor Bloch equations are formulated in momentum space and applied to the analysis of the linear optical response of semiconducting carbon nanotubes (SCNTs). This formalism includes the coupling of electron-hole pair excitations between different valence and conduction bands, originating from the electron-hole Coulomb attraction. The influence of these couplings, which are referred to as nondiagonal interband Coulomb interaction (NDI-CI), on the linear excitonic absorption spectra is investigated and discussed for light fields polarized parallel to the tube direction. The results show that the intervalley NDI-CI leads to a significant increase of the band gap and a decrease of the exciton binding energy that results in a blueshift of the lowest-frequency excitonic absorption peak. The strength of these effects depends on the symmetry of the SCNT. Furthermore, for zigzag SCNTs with higher symmetry other nonintervalley NDI-CI terms also affect the spectral positions of excitonic absorption peaks. AU - Liu, Hong AU - Schumacher, Stefan AU - Meier, Torsten ID - 15864 IS - 15 JF - Physical Review B SN - 1098-0121 TI - Influence of Coulomb-induced band couplings on linear excitonic absorption spectra of semiconducting carbon nanotubes VL - 89 ER - TY - JOUR AU - Barkhofen, Sonja AU - Bellec, M. AU - Kuhl, U. AU - Mortessagne, F. ID - 26497 JF - Physical Review B SN - 1098-0121 TI - Disordered graphene and boron nitride in a microwave tight-binding analog ER - TY - JOUR AU - Steinhoff, A. AU - Kurtze, H. AU - Gartner, P. AU - Florian, M. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. AU - Jahnke, F. ID - 7239 IS - 20 JF - Physical Review B SN - 1098-0121 TI - Combined influence of Coulomb interaction and polarons on the carrier dynamics in InGaAs quantum dots VL - 88 ER - TY - JOUR AU - Henn, T. AU - Kiessling, T. AU - Ossau, W. AU - Molenkamp, L. W. AU - Reuter, Dirk AU - Wieck, A. D. ID - 7240 IS - 19 JF - Physical Review B SN - 1098-0121 TI - Picosecond real-space imaging of electron spin diffusion in GaAs VL - 88 ER - TY - JOUR AU - Henn, T. AU - Heckel, A. AU - Beck, M. AU - Kiessling, T. AU - Ossau, W. AU - Molenkamp, L. W. AU - Reuter, Dirk AU - Wieck, A. D. ID - 7258 IS - 8 JF - Physical Review B SN - 1098-0121 TI - Hot carrier effects on the magneto-optical detection of electron spins in GaAs VL - 88 ER - TY - JOUR AU - Kuznetsova, M. S. AU - Flisinski, K. AU - Gerlovin, I. Ya. AU - Ignatiev, I. V. AU - Kavokin, K. V. AU - Verbin, S. Yu. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 7284 IS - 23 JF - Physical Review B SN - 1098-0121 TI - Hanle effect in (In,Ga)As quantum dots: Role of nuclear spin fluctuations VL - 87 ER - TY - JOUR AU - Komijani, Y. AU - Csontos, M. AU - Ihn, T. AU - Ensslin, K. AU - Meir, Y. AU - Reuter, Dirk AU - Wieck, A. D. ID - 7285 IS - 24 JF - Physical Review B SN - 1098-0121 TI - Origins of conductance anomalies in ap-type GaAs quantum point contact VL - 87 ER - TY - JOUR AU - Wang, D. Q. AU - Chen, J. C. H. AU - Klochan, O. AU - Das Gupta, K. AU - Reuter, Dirk AU - Wieck, A. D. AU - Ritchie, D. A. AU - Hamilton, A. R. ID - 7287 IS - 19 JF - Physical Review B SN - 1098-0121 TI - Influence of surface states on quantum and transport lifetimes in high-quality undoped heterostructures VL - 87 ER - TY - JOUR AU - Klochan, O. AU - Micolich, A. P. AU - Hamilton, A. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Reininghaus, F. AU - Pletyukhov, M. AU - Schoeller, H. ID - 7288 IS - 20 JF - Physical Review B SN - 1098-0121 TI - Scaling of the Kondo zero-bias peak in a hole quantum dot at finite temperatures VL - 87 ER - TY - JOUR AU - Henn, T. AU - Heckel, A. AU - Beck, M. AU - Kiessling, T. AU - Ossau, W. AU - Molenkamp, L. W. AU - Reuter, Dirk AU - Wieck, A. D. ID - 7289 IS - 8 JF - Physical Review B SN - 1098-0121 TI - Hot carrier effects on the magneto-optical detection of electron spins in GaAs VL - 88 ER - TY - JOUR AU - Schinner, G. J. AU - Repp, J. AU - Schubert, E. AU - Rai, A. K. AU - Reuter, Dirk AU - Wieck, A. D. AU - Govorov, A. O. AU - Holleitner, A. W. AU - Kotthaus, J. P. ID - 7290 IS - 20 JF - Physical Review B SN - 1098-0121 TI - Many-body correlations of electrostatically trapped dipolar excitons VL - 87 ER - TY - JOUR AU - Varwig, S. AU - René, A. AU - Greilich, A. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 7293 IS - 11 JF - Physical Review B SN - 1098-0121 TI - Temperature dependence of hole spin coherence in (In,Ga)As quantum dots measured by mode-locking and echo techniques VL - 87 ER - TY - JOUR AU - Moody, G. AU - Singh, R. AU - Li, H. AU - Akimov, I. A. AU - Bayer, M. AU - Reuter, Dirk AU - Wieck, A. D. AU - Cundiff, S. T. ID - 7298 IS - 4 JF - Physical Review B SN - 1098-0121 TI - Fifth-order nonlinear optical response of excitonic states in an InAs quantum dot ensemble measured with two-dimensional spectroscopy VL - 87 ER - TY - JOUR AU - Komijani, Y. AU - Choi, T. AU - Nichele, F. AU - Ensslin, K. AU - Ihn, T. AU - Reuter, Dirk AU - Wieck, A. D. ID - 7336 IS - 3 JF - Physical Review B SN - 1098-0121 TI - Counting statistics of hole transfer in ap-type GaAs quantum dot with dense excitation spectrum VL - 88 ER - TY - JOUR AU - Luk, M. H. AU - Tse, Y. C. AU - Kwong, N. H. AU - Leung, P. T. AU - Lewandowski, Przemyslaw AU - Binder, R. AU - Schumacher, Stefan ID - 15868 JF - Physical Review B SN - 1098-0121 TI - Transverse optical instability patterns in semiconductor microcavities: Polariton scattering and low-intensity all-optical switching ER - TY - JOUR AU - Sanna, S. AU - Rode, S. AU - Hölscher, R. AU - Klassen, S. AU - Marutschke, C. AU - Kobayashi, K. AU - Yamada, H. AU - Schmidt, Wolf Gero AU - Kühnle, A. ID - 13521 JF - Physical Review B SN - 1098-0121 TI - Charge compensation by long-period reconstruction in strongly polar lithium niobate surfaces VL - 88 ER - TY - JOUR AU - Sternemann, E. AU - Jostmeier, T. AU - Ruppert, C. AU - Duc, H. T. AU - Meier, Torsten AU - Betz, M. ID - 22952 IS - 16 JF - Physical Review B SN - 1098-0121 TI - Femtosecond quantum interference control of electrical currents in GaAs: Signatures beyond the perturbative χ(3) limit VL - 88 ER - TY - JOUR AB - We derive a transparent and easy-to-use analytic expression for the selection rules and the optical dipole matrix elements for carbon nanotubes of arbitrary chirality in the presence of axial magnetic fields using a single-orbital π-electron tight-binding model. From this, we calculate the linear absorption spectrum for arbitrary polarization directions of the incident light, providing insight into all optically allowed transition. We show that the transverse absorption peaks can be selectively excited with circularly polarized light and spectrally resolved in an axial magnetic field. AU - Liu, Hong AU - Schumacher, Stefan AU - Meier, Torsten ID - 15871 IS - 3 JF - Physical Review B SN - 1098-0121 TI - Selection rules and linear absorption spectra of carbon nanotubes in axial magnetic fields VL - 88 ER - TY - JOUR AU - Landmann, M. AU - Rauls, E. AU - Schmidt, Wolf Gero AU - Röppischer, Marcus AU - Cobet, Christoph AU - Esser, Norbert AU - Schupp, Thorsten AU - As, Donat J. AU - Feneberg, Martin AU - Goldhahn, Rüdiger ID - 13524 IS - 19 JF - Physical Review B SN - 1098-0121 TI - Transition energies and direct-indirect band gap crossing in zinc-blende AlxGa1−xN VL - 87 ER - TY - JOUR AU - Burke, A. M. AU - Waddington, D. E. J. AU - Carrad, D. J. AU - Lyttleton, R. W. AU - Tan, H. H. AU - Reece, P. J. AU - Klochan, O. AU - Hamilton, A. R. AU - Rai, A. AU - Reuter, Dirk AU - Wieck, A. D. AU - Micolich, A. P. ID - 7300 IS - 16 JF - Physical Review B SN - 1098-0121 TI - Origin of gate hysteresis inp-type Si-doped AlGaAs/GaAs heterostructures VL - 86 ER - TY - JOUR AU - Varwig, S. AU - Schwan, A. AU - Barmscheid, D. AU - Müller, C. AU - Greilich, A. AU - Yugova, I. A. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 7302 IS - 7 JF - Physical Review B SN - 1098-0121 TI - Hole spin precession in a (In,Ga)As quantum dot ensemble: From resonant spin amplification to spin mode locking VL - 86 ER - TY - JOUR AU - Ganczarczyk, A. AU - Rojek, S. AU - Quindeau, A. AU - Geller, M. AU - Hucht, A. AU - Notthoff, C. AU - König, J. AU - Lorke, A. AU - Reuter, Dirk AU - Wieck, A. D. ID - 7303 IS - 8 JF - Physical Review B SN - 1098-0121 TI - Transverse rectification in density-modulated two-dimensional electron gases VL - 86 ER -