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  • 1.
    Bielecki, Johan
    et al.
    Uppsala Univ, Dept Cell & Mol Biol, Lab Mol Biophys, Husargatan 3,Box 596, SE-75124 Uppsala, Sweden.;European XFEL GmbH, Holzkoppel 4, D-22869 Schenefeld, Germany..
    Svenda, Martin
    KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics. Uppsala Univ, Dept Cell & Mol Biol, Lab Mol Biophys, Husargatan 3,Box 596, SE-75124 Uppsala, Sweden.
    Sellberg, Jonas A.
    KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics. Uppsala Univ, Dept Cell & Mol Biol, Lab Mol Biophys, Husargatan 3,Box 596, SE-75124 Uppsala, Sweden.
    Maia, Filipe R. N. C.
    Uppsala Univ, Dept Cell & Mol Biol, Lab Mol Biophys, Husargatan 3,Box 596, SE-75124 Uppsala, Sweden.;Lawrence Berkeley Natl Lab, NERSC, Berkeley, CA 94720 USA..
    Electrospray sample injection for single-particle imaging with x-ray lasers2019In: Science Advances, E-ISSN 2375-2548, Vol. 5, no 5, article id eaav8801Article in journal (Refereed)
    Abstract [en]

    The possibility of imaging single proteins constitutes an exciting challenge for x-ray lasers. Despite encouraging results on large particles, imaging small particles has proven to be difficult for two reasons: not quite high enough pulse intensity from currently available x-ray lasers and, as we demonstrate here, contamination of the aerosolized molecules by nonvolatile contaminants in the solution. The amount of contamination on the sample depends on the initial droplet size during aerosolization. Here, we show that, with our electrospray injector, we can decrease the size of aerosol droplets and demonstrate virtually contaminant-free sample delivery of organelles, small virions, and proteins. The results presented here, together with the increased performance of next-generation x-ray lasers, constitute an important stepping stone toward the ultimate goal of protein structure determination from imaging at room temperature and high temporal resolution.

  • 2. Clark, C. J.
    et al.
    Pletsch, H. J.
    Wu, J.
    Guillemot, L.
    Kerr, M.
    Johnson, T. J.
    Camilo, F.
    Salvetti, D.
    Allen, B.
    Anderson, D.
    Aulbert, C.
    Beer, C.
    Bock, O.
    Cuéllar, A.
    Eggenstein, H. -B
    Fehrmann, H.
    Kramer, M.
    Kwang, S. A.
    MacHenschalk, B.
    Nieder, L.
    Ackermann, M.
    Ajello, M.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Bellazzini, R.
    Bissaldi, E.
    Blandford, R. D.
    Bloom, E. D.
    Bonino, R.
    Bottacini, E.
    Brandt, T. J.
    Bregeon, J.
    Bruel, P.
    Buehler, R.
    Burnett, T. H.
    Buson, S.
    Cameron, R. A.
    Caputo, R.
    Caraveo, P. A.
    Cavazzuti, E.
    Cecchi, C.
    Charles, E.
    Chekhtman, A.
    Ciprini, S.
    Cominsky, L. R.
    Costantin, D.
    Cutini, S.
    D'Ammando, F.
    De Luca, A.
    Desiante, R.
    Di Venere, L.
    Di Mauro, M.
    Di Lalla, N.
    Digel, S. W.
    Favuzzi, C.
    Ferrara, E. C.
    Franckowiak, A.
    Fukazawa, Y.
    Funk, S.
    Fusco, P.
    Gargano, F.
    Gasparrini, D.
    Giglietto, N.
    Giordano, F.
    Giroletti, M.
    Gomez-Vargas, G. A.
    Green, D.
    Grenier, I. A.
    Guiriec, S.
    Harding, A. K.
    Hewitt, J. W.
    Horan, D.
    Jóhannesson, G.
    Kensei, S.
    Kuss, M.
    La Mura, G.
    Larsson, Stefan
    KTH, School of Engineering Sciences (SCI), Physics. The Oskar Klein Centre for Cosmoparticle Physics, AlbaNova, SE-106 91 Stockholm, Sweden..
    Latronico, L.
    Li, J.
    Longo, F.
    Loparco, F.
    Lovellette, M. N.
    Lubrano, P.
    Magill, J. D.
    Maldera, S.
    Manfreda, A.
    Mazziotta, M. N.
    McEnery, J. E.
    Michelson, P. F.
    Mirabal, N.
    Mitthumsiri, W.
    Mizuno, T.
    Monzani, M. E.
    Morselli, A.
    Moskalenko, I. V.
    Nuss, E.
    Ohsugi, T.
    Omodei, N.
    Orienti, M.
    Orlando, E.
    Palatiello, M.
    Paliya, V. S.
    De Palma, F.
    Paneque, D.
    Perkins, J. S.
    Persic, M.
    Pesce-Rollins, M.
    Porter, T. A.
    Principe, G.
    Rainò, S.
    Rando, R.
    Ray, P. S.
    Razzano, M.
    Reimer, A.
    Reimer, O.
    Romani, R. W.
    Parkinson, P. M. S.
    Sgrò, C.
    Siskind, E. J.
    Smith, D. A.
    Spada, F.
    Spandre, G.
    Spinelli, P.
    Thayer, J. B.
    Thompson, D. J.
    Torres, D. F.
    Troja, E.
    Vianello, G.
    Wood, K.
    Wood, M.
    Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar2018In: Science Advances, ISSN 0036-8156, E-ISSN 2375-2548, Vol. 4, no 2, article id eaao7228Article in journal (Refereed)
    Abstract [en]

    Millisecond pulsars (MSPs) are old neutron stars that spin hundreds of times per second and appear to pulsate as their emission beams cross our line of sight. To date,radio pulsations have been detected from all rotation-powered MSPs. In an attempt to discover radio-quiet gamma-ray MSPs,we used the aggregated power from the computers of tens of thousands of volunteers participating in the Einstein@Home distributed computing project to search for pulsations from unidentified gamma-ray sources in Fermi Large Area Telescope data. This survey discovered two isolated MSPs,one of which is the only known rotation-powered MSP to remain undetected in radio observations. These gamma-ray MSPs were discovered in completely blind searches without prior constraints from other observations,raising hopes for detecting MSPs from a predicted Galactic bulge population. 

  • 3.
    Fulara, H.
    et al.
    Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden..
    Zahedinejad, M.
    Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.;NanOsc AB, Electrum 229, S-16440 Kista, Sweden..
    Khymyn, R.
    Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden..
    Awad, A. A.
    Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.;NanOsc AB, Electrum 229, S-16440 Kista, Sweden..
    Muralidhar, S.
    Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden..
    Dvornik, M.
    Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.;NanOsc AB, Electrum 229, S-16440 Kista, Sweden..
    Åkerman, Johan
    KTH, School of Engineering Sciences (SCI), Applied Physics, Materials and Nanophysics. Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.;NanOsc AB, Electrum 229, S-16440 Kista, Sweden..
    Spin-orbit torque-driven propagating spin waves2019In: Science Advances, E-ISSN 2375-2548, Vol. 5, no 9, article id eaax8467Article in journal (Refereed)
    Abstract [en]

    Spin-orbit torque (SOT) can drive sustained spin wave (SW) auto-oscillations in a class of emerging microwave devices known as spin Hall nano-oscillators (SHNOs), which have highly nonlinear properties governing robust mutual synchronization at frequencies directly amenable to high-speed neuromorphic computing. However, all demonstrations have relied on localized SW modes interacting through dipolar coupling and/or direct exchange. As nanomagnonics requires propagating SWs for data transfer and additional computational functionality can be achieved using SW interference, SOT-driven propagating SWs would be highly advantageous. Here, we demonstrate how perpendicular magnetic anisotropy can raise the frequency of SOT-driven auto-oscillations in magnetic nanoconstrictions well above the SW gap, resulting in the efficient generation of field and current tunable propagating SWs. Our demonstration greatly extends the functionality and design freedom of SHNOs, enabling long-range SOT-driven SW propagation for nanomagnonics, SW logic, and neuromorphic computing, directly compatible with CMOS technology.

  • 4. Li, T.
    et al.
    Song, J.
    Zhao, X.
    Yang, Z.
    Pastel, G.
    Xu, S.
    Jia, C.
    Dai, J.
    Dai, C.
    Gong, A.
    Jiang, F.
    Yao, Y.
    Fan, T.
    Yang, B.
    Wågberg, Lars
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.
    Yang, R.
    Hu, L.
    Anisotropic, lightweight, strong, and super thermally insulating nanowood with naturally aligned nanocellulose2018In: Science Advances, ISSN 0036-8156, E-ISSN 2375-2548, Vol. 4, no 3, article id eaar3724Article in journal (Refereed)
    Abstract [en]

    There has been a growing interest in thermal management materials due to the prevailing energy challenges and unfulfilled needs for thermal insulation applications. We demonstrate the exceptional thermal management capabilities of a large-scale, hierarchal alignment of cellulose nanofibrils directly fabricated fromwood, hereafter referred to as nanowood. Nanowood exhibits anisotropic thermal properties with an extremely low thermal conductivity of 0.03W/m·K in the transverse direction (perpendicular to the nanofibrils) and approximately two times higher thermal conductivity of 0.06W/m·K in the axial direction due to the hierarchically aligned nanofibrilswithin the highly porous backbone. The anisotropy of the thermal conductivity enables efficient thermal dissipation along the axial direction, thereby preventing local overheating on the illuminated side while yielding improved thermal insulation along the backside that cannot be obtained with isotropic thermal insulators. The nanowood also shows a low emissivity of <5% over the solar spectrum with the ability to effectively reflect solar thermal energy. Moreover, the nanowood is lightweight yet strong, owing to the effective bonding between the aligned cellulose nanofibrils with a high compressive strength of 13 MPa in the axial direction and 20MPa in the transverse direction at 75% strain, which exceeds other thermal insulation materials, such as silica and polymer aerogels, Styrofoam, and wool. The excellent thermal management, abundance, biodegradability, high mechanical strength, low mass density, and manufacturing scalability of the nanowood make this material highly attractive for practical thermal insulation applications. 

  • 5. Lorenzen, E.
    et al.
    Dodig-Crnkovic, Tea
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Affinity Proteomics. KTH, Centres, Science for Life Laboratory, SciLifeLab.
    Kotliar, I. B.
    Pin, Elisa
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Affinity Proteomics. KTH, Centres, Science for Life Laboratory, SciLifeLab.
    Ceraudo, E.
    Vaughan, R. D.
    Uhlén, Mathias
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Systems Biology. KTH, Centres, Science for Life Laboratory, SciLifeLab.
    Huber, T.
    Schwenk, Jochen M.
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Affinity Proteomics. KTH, Centres, Science for Life Laboratory, SciLifeLab.
    Sakmar, T. P.
    Multiplexed analysis of the secretin-like GPCR-RAMP interactome2019In: Science Advances, E-ISSN 2375-2548, Vol. 5, no 9, article id eaaw2778Article in journal (Refereed)
    Abstract [en]

    Receptor activity–modifying proteins (RAMPs) have been shown to modulate the functions of several G protein–coupled receptors (GPCRs), but potential direct interactions among the three known RAMPs and hundreds of GPCRs have never been investigated. Focusing mainly on the secretin-like family of GPCRs, we engineered epitope-tagged GPCRs and RAMPs, and developed a multiplexed suspension bead array (SBA) immunoassay to detect GPCR-RAMP complexes from detergent-solubilized lysates. Using 64 antibodies raised against the native proteins and 4 antibodies targeting the epitope tags, we mapped the interactions among 23 GPCRs and 3 RAMPs. We validated nearly all previously reported secretin-like GPCR-RAMP interactions, and also found previously unidentified RAMP interactions with additional secretin-like GPCRs, chemokine receptors, and orphan receptors. The results provide a complete interactome of secretin-like GPCRs with RAMPs. The SBA strategy will be useful to search for additional GPCR-RAMP complexes and other interacting membrane protein pairs in cell lines and tissues. Copyright

  • 6.
    Lorenzen, Emily
    et al.
    Rockefeller Univ, Lab Chem Biol & Signal Transduct, 1230 York Ave, New York, NY 10065 USA..
    Dodig-Crnkovic, Tea
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Affinity Proteomics. KTH, Centres, Science for Life Laboratory, SciLifeLab.
    Kotliar, Ilana B.
    Rockefeller Univ, Lab Chem Biol & Signal Transduct, 1230 York Ave, New York, NY 10065 USA.;Tri Inst PhD Program Chem Biol, New York, NY 10065 USA..
    Pin, Elisa
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Affinity Proteomics. KTH, Centres, Science for Life Laboratory, SciLifeLab.
    Ceraudo, Emilie
    Rockefeller Univ, Lab Chem Biol & Signal Transduct, 1230 York Ave, New York, NY 10065 USA..
    Vaughan, Roger D.
    Rockefeller Univ, Ctr Clin & Translat Sci, 1230 York Ave, New York, NY 10065 USA..
    Uhlén, Mathias
    KTH, Centres, Science for Life Laboratory, SciLifeLab. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Systems Biology.
    Huber, Thomas
    Rockefeller Univ, Lab Chem Biol & Signal Transduct, 1230 York Ave, New York, NY 10065 USA..
    Schwenk, Jochen M.
    KTH, Centres, Science for Life Laboratory, SciLifeLab. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Affinity Proteomics.
    Sakmar, Thomas P.
    Rockefeller Univ, Lab Chem Biol & Signal Transduct, 1230 York Ave, New York, NY 10065 USA.;Karolinska Inst, Dept Neurobiol Care Sci & Soc, Sect Neurogeriatr, S-17164 Solna, Sweden..
    Multiplexed analysis of the secretin-like GPCR-RAMP interactome2019In: Science Advances, E-ISSN 2375-2548, Vol. 5, no 9, article id eaaw2778Article in journal (Refereed)
    Abstract [en]

    Receptor activity-modifying proteins (RAMPs) have been shown to modulate the functions of several G protein-coupled receptors (GPCRs), but potential direct interactions among the three known RAMPs and hundreds of GPCRs have never been investigated. Focusing mainly on the secretin-like family of GPCRs, we engineered epitope-tagged GPCRs and RAMPs, and developed a multiplexed suspension bead array (SBA) immunoassay to detect GPCR-RAMP complexes from detergent-solubilized lysates. Using 64 antibodies raised against the native proteins and 4 antibodies targeting the epitope tags, we mapped the interactions among 23 GPCRs and 3 RAMPs. We validated nearly all previously reported secretin-like GPCR-RAMP interactions, and also found previously unidentified RAMP interactions with additional secretin-like GPCRs, chemokine receptors, and orphan receptors. The results provide a complete interactome of secretin-like GPCRs with RAMPs. The SBA strategy will be useful to search for additional GPCR-RAMP complexes and other interacting membrane protein pairs in cell lines and tissues.

  • 7. Ottosson, Nina E.
    et al.
    Ejneby, Malin Silvera
    Wu, Xiongyu
    Yazdi, Samira
    Konradsson, Peter
    Lindahl, Erik
    KTH, Centres, SeRC - Swedish e-Science Research Centre. KTH, School of Engineering Sciences (SCI), Physics.
    Elinder, Fredrik
    A drug pocket at the lipid bilayer-potassium channel interface2017In: Science Advances, ISSN 0036-8156, E-ISSN 2375-2548, Vol. 3, no 10, article id e1701099Article in journal (Refereed)
    Abstract [en]

    Many pharmaceutical drugs against neurological and cardiovascular disorders exert their therapeutic effects by binding to specific sites on voltage-gated ion channels of neurons or cardiomyocytes. To date, all molecules targeting known ion channel sites bind to protein pockets that are mainly surrounded by water. We describe a lipid-protein drug-binding pocket of a potassium channel. We synthesized and electrophysiologically tested 125 derivatives, analogs, and related compounds to dehydroabietic acid. Functional data in combination with docking and molecular dynamics simulations mapped a binding site for small-molecule compounds at the interface between the lipid bilayer and the transmembrane segments S3 and S4 of the voltage-sensor domain. This fundamentally new binding site for small-molecule compounds paves the way for the design of new types of drugs against diseases caused by altered excitability.

  • 8.
    Rafailovic, Lidija D.
    et al.
    CEST, Viktor Kaplan Str 2, A-2700 Wiener Neustadt, Austria..
    Gammer, Christoph
    Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria..
    Ebner, Christian
    Univ Vienna, Phys Nanostruct Mat, Boltzmanngasse 5, A-1090 Vienna, Austria..
    Rentenberger, Christian
    Univ Vienna, Phys Nanostruct Mat, Boltzmanngasse 5, A-1090 Vienna, Austria..
    Jovanovic, Aleksandar Z.
    CEST, Viktor Kaplan Str 2, A-2700 Wiener Neustadt, Austria.;Univ Belgrade, Fac Phys Chem, Studentski Trg 12-16, Belgrade 11158, Serbia..
    Pasti, Igor A.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. Univ Belgrade, Fac Phys Chem, Studentski Trg 12-16, Belgrade 11158, Serbia..
    Skorodumova, Natalia
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. Uppsala Univ, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden..
    Karnthaler, H. Peter
    Univ Vienna, Phys Nanostruct Mat, Boltzmanngasse 5, A-1090 Vienna, Austria..
    High density of genuine growth twins in electrodeposited aluminum2019In: Science Advances, E-ISSN 2375-2548, Vol. 5, no 10, article id eaax3894Article in journal (Refereed)
    Abstract [en]

    We demonstrate electrodeposition as a synthesis method for fabrication of Al coatings, up to 10 mu m thick, containing a high density of genuine growth twins. This has not been expected since the twin boundary energy of pure Al is very high. TEM methods were used to analyze deposited Al and its nanoscaled twins. DFT methods confirmed that the influence of the substrate is limited to the layers close to the interface. Our findings are different from those achieved by sputtering of Al coatings restricted to a thickness less than 100 nm with twins dominated by epitaxial effects. We propose that in the case of electrodeposition, a high density of twins arises because of fast nucleation and is additionally promoted by a monolayer of adsorbed hydrogen originating from water impurities. Therefore, electrodeposition is a viable approach for tailoring the structure and properties of thicker, deposited Al coatings reinforced by twins.

  • 9.
    Reindl, Marcus
    et al.
    Johannes Kepler Univ Linz, Inst Semicond & Solid State Phys, A-4040 Linz, Austria..
    Huber, Daniel
    Johannes Kepler Univ Linz, Inst Semicond & Solid State Phys, A-4040 Linz, Austria..
    Schimpf, Christian
    Johannes Kepler Univ Linz, Inst Semicond & Solid State Phys, A-4040 Linz, Austria..
    da Silva, Saimon F. Covre
    Johannes Kepler Univ Linz, Inst Semicond & Solid State Phys, A-4040 Linz, Austria..
    Rota, Michele B.
    Johannes Kepler Univ Linz, Inst Semicond & Solid State Phys, A-4040 Linz, Austria.;Sapienza Univ Rome, Dept Phys, I-00185 Rome, Italy..
    Huang, Huiying
    Johannes Kepler Univ Linz, Inst Semicond & Solid State Phys, A-4040 Linz, Austria..
    Zwiller, Val
    KTH, School of Engineering Sciences (SCI), Applied Physics, Quantum and Biophotonics.
    Jöns, Klaus D.
    KTH, School of Engineering Sciences (SCI), Applied Physics, Quantum and Biophotonics.
    Rastelli, Armando
    Johannes Kepler Univ Linz, Inst Semicond & Solid State Phys, A-4040 Linz, Austria.;Johannes Kepler Univ Linz, Linz Inst Technol, A-4040 Linz, Austria..
    Trotta, Rinaldo
    Johannes Kepler Univ Linz, Inst Semicond & Solid State Phys, A-4040 Linz, Austria.;Sapienza Univ Rome, Dept Phys, I-00185 Rome, Italy..
    All-photonic quantum teleportation using on-demand solid-state quantum emitters2018In: Science Advances, E-ISSN 2375-2548, Vol. 4, no 12, article id eaau1255Article in journal (Refereed)
    Abstract [en]

    All-optical quantum teleportation lies at the heart of quantum communication science and technology. This quantum phenomenon is built up around the nonlocal properties of entangled states of light that, in the perspective of real-life applications, should be encoded on photon pairs generated on demand. Despite recent advances, however, the exploitation of deterministic quantum light sources in push-button quantum teleportation schemes remains a major open challenge. Here, we perform an important step toward this goal and show that photon pairs generated on demand by a GaAs quantum dot can be used to implement a teleportation protocol whose fidelity violates the classical limit (by more than 5 SDs) for arbitrary input states. Moreover, we develop a theoretical framework that matches the experimental observations and that defines the degree of entanglement and indistinguishability needed to overcome the classical limit independently of the input state. Our results emphasize that on-demand solid-state quantum emitters are one of the most promising candidates to realize deterministic quantum teleportation in practical quantum networks.

  • 10.
    Revelli, A.
    et al.
    Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany..
    Sala, M. Moretti
    European Synchrotron Radiat Facil, BP 220, F-38043 Grenoble, France.;Politecn Milan, Dipartimento Fis, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy..
    Monaco, G.
    Univ Trento, Dipartimento Fis, Via Sommar 14, I-38123 Povo, TN, Italy..
    Becker, P.
    Inst Geol & Mineral, Abt Kristallog, Zulpicher Str 49b, D-50674 Cologne, Germany..
    Bohaty, L.
    Inst Geol & Mineral, Abt Kristallog, Zulpicher Str 49b, D-50674 Cologne, Germany..
    Hermanns, Maria
    KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
    Koethe, T. C.
    Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany..
    Froehlich, T.
    Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany..
    Warzanowski, P.
    Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany..
    Lorenz, T.
    Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany..
    Streltsov, S. V.
    Russian Acad Sci, MN Mikheev Inst Met Phys, Ural Branch, Ekaterinburg 620137, Russia.;Ural Fed Univ, Mira St 19, Ekaterinburg 620002, Russia..
    van Loosdrecht, P. H. M.
    Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany..
    Khomskii, D. I.
    Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany..
    van den Brink, J.
    IFW Dresden, Inst Theoret Solid State Phys, Helmholtzstr 20, D-01069 Dresden, Germany..
    Grueninger, M.
    Univ Cologne, Phys Inst 2, Zulpicher Str 77, D-50937 Cologne, Germany..
    Resonant inelastic x-ray incarnation of Young's double-slit experiment2019In: Science Advances, E-ISSN 2375-2548, Vol. 5, no 1, article id eaav4020Article in journal (Refereed)
    Abstract [en]

    Young's archetypal double-slit experiment forms the basis for modern diffraction techniques: The elastic scattering of waves yields an interference pattern that captures the real-space structure. Here, we report on an inelastic incarnation of Young's experiment and demonstrate that resonant inelastic x-ray scattering (RIXS) measures interference patterns, which reveal the symmetry and character of electronic excited states in the same way as elastic scattering does for the ground state. A prototypical example is provided by the quasi-molecular electronic structure of insulating Ba3CeIr2O9 with structural Ir dimers and strong spin-orbit coupling. The double "slits" in this resonant experiment are the highly localized core levels of the two Ir atoms within a dimer. The clear double-slit-type sinusoidal interference patterns that we observe allow us to characterize the electronic excitations, demonstrating the power of RIXS interferometry to unravel the electronic structure of solids containing, e.g., dimers, trimers, ladders, or other superstructures.

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