Now showing items 21-40 of 1688

    • Subterahertz spin pumping from an insulating antiferromagnet 

      Vaidya, Priyanka; Morley, Sophie A.; van Tol, Johan; Liu, Yan; Cheng, Ran; Brataas, Arne; Lederman, David; del Barco, Enrique (Peer reviewed; Journal article, 2020)
      Spin-transfer torque and spin Hall effects combined with their reciprocal phenomena, spin pumping and inverse spin Hall effects (ISHEs), enable the reading and control of magnetic moments in spintronics. The direct observation ...
    • Precipitation behavior in an Al-Cu-Mg-Si alloy during ageing 

      Gazizov, Marat; Marioara, Calin Daniel; Friis, Jesper; Wenner, Sigurd; Holmestad, Randi; Kaibyshev, Rustam (Peer reviewed; Journal article, 2019)
      The precipitation behavior and aging response of an Al-4.9Cu-0.74Mg-0.51Si-0.48Mn-0.1Cr-0.08Ti-0.02Fe (wt. %) alloy was examined in detail after aging at 170 °C with different dwell times up to 96 h. Deformation by ...
    • Combined experimental and theoretical study of acetylene semi-hydrogenation over Pd/Al <sub>2</sub> O <sub>3</sub> 

      Goncalves, Liliana PL; Wang, Jianguang; Vinati, Simone; Barborini, Emanuele; Wei, Xian-Kui; Heggen, Marc; Franco, Miguel; Sousa, Juliana PS; Petrovykh, Dmitri Y; Soares, Olívia Salomé Gonçalves Pinto; Kovnir, Kirill; Akola, Jaakko; Kolen'ko, Yury V (Peer reviewed; Journal article, 2019)
      The semi-hydrogenation of acetylene (C2H2 + H2 = C2H4, ΔH = −172 kJ mol−1) is a well-studied reaction that is important for purification of ethylene, C2H4, feed used in polyethylene production. Pd-based catalysts are most ...
    • Renewable CO2 recycling and synthetic fuel production in a marine environment 

      Patterson, Bruce D.; Mo, Frode; Borgschulte, Andreas; Hillestad, Magne; Joos, Fortunat; Kristiansen, Trygve; Sunde, Svein; van Bokhoven, Jeroen A. (Peer reviewed; Journal article, 2019)
      Humankind must cease CO2 emissions from fossil fuel burning if dangerous climate change is to be avoided. However, liquid carbon-based energy carriers are often without practical alternatives for vital mobility applications. ...
    • Casimir friction between dense polarizable media 

      Høye, Johan Skule; Brevik, Iver Håkon (Peer reviewed; Journal article, 2013)
      The present paper—a continuation of our recent series of papers on Casimir friction for a pair of particles at low relative particle velocity—extends the analysis, so as to include dense media. The situation becomes, in ...
    • Oil Spill Contingency and Response Modelling in Ice-Covered Waters 

      Nordam, Tor; Litzler, Emma; Rønningen, Petter; Aune, Joakim; Hagelien, Thomas Fjæstad; Beegle-Krause, Cynthia Juyne; Brönner, Ute (Chapter, 2018)
    • Advanced Transmission Electron Microscopy of III-V Nanowires 

      Nilsen, Julie Stene (Doctoral theses at NTNU;2020:84, Doctoral thesis, 2020)
      Semiconducting nanowires have many interesting applications and a promising future as building blocks for optoelectronic devices. In this work, the aim is to improve the characterization of the nanowire structure and ...
    • Current driven spin–orbit torque oscillator: ferromagnetic and antiferromagnetic coupling 

      Johansen, Øyvind; Linder, Jacob (Peer reviewed; Journal article, 2016)
      We consider theoretically the impact of Rashba spin–orbit coupling on spin torque oscillators (STOs) in synthetic ferromagnets and antiferromagnets that have either a bulk multilayer or a thin film structure. The synthetic ...
    • Favorable effects on arterial stiffness after renal sympathetic denervation for the treatment of resistant hypertension: a cardiovascular magnetic resonance study 

      Hammer, Tommy Arild; Langlo, Knut Asbjørn Rise; Goa, Pål Erik; Fadl Elmula, Fadl Elmula M.; HOFFMANN, PAVEL; STENSÆTH, KNUT-HAAKON (Peer reviewed; Journal article, 2016)
      Aims: Renal sympathetic denervation (RDN) has recently been suggested to be a novel treatment strategy for patients with treatment-resistant hypertension. However, the latest randomized studies have provided conflicting ...
    • Numerical Integration and Interpolation in Marine Pollutant Transport Modelling 

      Nordam, Tor; Brönner, Ute; Skancke, Jørgen; Nepstad, Raymond; Rønningen, Petter; Alver, Morten (Chapter, 2018)
    • Spin-valley locking in the normal state of a transition-metal dichalcogenide superconductor 

      Bawden, L; Cooil, Simon Phillip; Mazzola, Federico; Riley, JM; Collins-Mcintyre, LJ; Sunko, V; Hunvik, Kristoffer William; Leandersson, M.; Polley, CM; Balasubramanian, T.; Kim, TK; Hoesch, M; Wells, Justin; Balakrishnan, G; Bahramy, MS; King, PDC (Peer reviewed; Journal article, 2016)
      Metallic transition-metal dichalcogenides (TMDCs) are benchmark systems for studying and controlling intertwined electronic orders in solids, with superconductivity developing from a charge-density wave state. The interplay ...
    • Nanoscale Structure and Spectroscopic Probing of Aβ1-40 Fibril Bundle Formation 

      Psonka-Antonczyk, Katarzyna Maria; Hammarström, Per; Johansson, Leif B. G.; Lindgren, Mikael; Stokke, Bjørn Torger; Nilsson, K. Peter R.; Nyström, Sofie (Peer reviewed; Journal article, 2016)
      Amyloid plaques composed of fibrillar Amyloid-β (Aβ) are hallmarks of Alzheimer's disease. However, Aβ fibrils are morphologically heterogeneous. Conformation sensitive luminescent conjugated oligothiophenes (LCOs) are ...
    • Chiral ferromagnetism beyond Lifshitz invariants 

      Ado, I. A.; Qaiumzadeh, Alireza; Brataas, Arne; Titov, M. (Peer reviewed; Journal article, 2020)
      We consider a contribution w ch to the micromagnetic energy density that is linear with respect to the first spatial derivatives of the local magnetization direction. For a generalized two-dimensional Rashba ferromagnet, ...
    • Scanning Precession Electron Diffraction to aid Aluminum Alloy Development 

      Sunde, Jonas Kristoffer; Christiansen, Emil; Thronsen, Elisabeth; Wenner, Sigurd; Marioara, Calin Daniel; Van Helvoort, Antonius; Holmestad, Randi (Peer reviewed; Journal article, 2019)
    • Current-driven skyrmion depinning in magnetic granular films 

      Salimath, A; Abbout, A; Brataas, Arne; Manchon, A (Peer reviewed; Journal article, 2019)
      We consider current-driven motion of magnetic skyrmions in granular magnetic films. The study uses micromagnetic modeling and phenomenological analysis based on the Thiele formalism. Remarkably, the disorder enhances the ...
    • In-situ X-radiographic study of nucleation and growth behaviour of primary silicon particles during solidification of a hypereutectic Al-Si alloy 

      Xu, Yijiang; Deng, Yun; Casari, Daniele; Mathiesen, Ragnvald; Li, Yanjun (Peer reviewed; Journal article, 2020)
      Real-time observation of structure evolution in a hypereutectic Al-Si(-Cu) alloy under near-isothermal melt solidification condition was conducted by using in-situ micro-focus X-radiography. The nucleation, growth rate and ...
    • Ultrahigh-pressure form of Si O2 glass with dense pyrite-type crystalline homology 

      Murakami, M.; Kohara, S; Kitamura, N.; Akola, Jaakko; Inoue, H; Hirata, A; Hiraoka, Y; Onodera, Y; Obayashi, I; Kalikka, J; Hirao, N; Musso, T; Foster, Adam S; Idemoto, Y; Sakata, O; Ohishi, Y (Peer reviewed; Journal article, 2019)
      High-pressure synthesis of denser glass has been a longstanding interest in condensed-matter physics and materials science because of its potentially broad industrial application. Nevertheless, understanding its nature ...
    • Anisotropic and controllable Gilbert-Bloch dissipation in spin valves 

      Kamra, Akashdeep; Polishchuk, Dmytro; Korenivski, Vladislav; Brataas, Arne (Peer reviewed; Journal article, 2019)
      Spin valves form a key building block in a wide range of spintronic concepts and devices from magnetoresistive read heads to spin-transfer-torque oscillators. We elucidate the dependence of the magnetic damping in the free ...
    • Antiferromagnetic magnons as highly squeezed Fock states underlying quantum correlations 

      Kamra, Akashdeep; Thingstad, Even; Rastelli, Gianluca; Duine, Rembert A.; Brataas, Arne; Belzig, Wolfgang; Sudbø, Asle (Peer reviewed; Journal article, 2019)
      Employing the concept of two-mode squeezed states from quantum optics, we demonstrate a revealing physical picture for the antiferromagnetic ground state and excitations. Superimposed on a Néel ordered configuration, a ...
    • Spin current cross-correlations as a probe of magnon coherence 

      Bender, Scott A.; Kamra, Akashdeep; Belzig, Wolfgang; Duine, Rembert (Peer reviewed; Journal article, 2019)
      Motivated by the important role of the normalized second-order coherence function, often called g(2), in the field of quantum optics, we propose a method to determine magnon coherence in solid-state devices. Namely, we ...