Coupling (piping)
View article: Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems Open
Spin-orbit coupling in inversion-asymmetric magnetic crystals and structures has emerged as a powerful tool to generate complex magnetic textures, interconvert charge and spin under applied current, and control magnetization dynamics. Curr…
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Ultrastrong coupling regimes of light-matter interaction Open
Recent experiments have demonstrated that light and matter can mix together to an extreme degree, and previously uncharted regimes of light-matter interactions are currently being explored in a variety of settings. The so-called ultrastron…
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Revealing the spin–vibronic coupling mechanism of thermally activated delayed fluorescence Open
Knowing the underlying photophysics of thermally activated delayed fluorescence (TADF) allows proper design of high efficiency organic light-emitting diodes. We have proposed a model to describe reverse intersystem crossing (rISC) in donor…
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Transition metal–catalyzed alkyl-alkyl bond formation: Another dimension in cross-coupling chemistry Open
Stitching one alkyl group to another Chemical reactions such as Heck and Suzuki coupling facilitate access to an enormous range of relatively flat molecules. This geometrical constraint is associated with the comparative ease of linking to…
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Spin-Vibronic Mechanism for Intersystem Crossing Open
Intersystem crossing (ISC), formally forbidden within nonrelativistic quantum theory, is the mechanism by which a molecule changes its spin state. It plays an important role in the excited state decay dynamics of many molecular systems and…
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Calcium and Excitation-Contraction Coupling in the Heart Open
Cardiac contractility is regulated by changes in intracellular Ca concentration ([Ca 2+ ] i ). Normal function requires that [Ca 2+ ] i be sufficiently high in systole and low in diastole. Much of the Ca needed for contraction comes from t…
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Tilting a ground-state reactivity landscape by vibrational strong coupling Open
Shaking up reaction-site selectivity It seems intuitive that putting vibrational energy into a chemical bond ought to promote selective cleavage of that bond. In fact, the relation of vibrational excitation to reactivity has generally prov…
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Realization of two-dimensional spin-orbit coupling for Bose-Einstein condensates Open
Spin-orbit coupling in an optical lattice Studying topological matter in cold-atom systems may bring fresh insights, thanks to the intrinsic purity and controllability of this experimental setting. However, the necessary spin-orbit couplin…
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The Importance of Vibronic Coupling for Efficient Reverse Intersystem Crossing in Thermally Activated Delayed Fluorescence Molecules Open
Factors influencing the rate of reverse intersystem crossing ( k rISC ) in thermally activated delayed fluorescence (TADF) emitters are critical for improving the efficiency and performance of third‐generation heavy‐metal‐free organic ligh…
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All-Si valley-Hall photonic topological insulator Open
An all-Si photonic structure emulating the quantum-valley-Hall effect is proposed. We show that it acts as a photonic topological insulator (PTI), and that an interface between two such PTIs can support edge states that are free from scatt…
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Single-Electron Transmetalation via Photoredox/Nickel Dual Catalysis: Unlocking a New Paradigm for sp<sup>3</sup>–sp<sup>2</sup> Cross-Coupling Open
The important role of transition metal-catalyzed cross-coupling in expanding the frontiers of accessible chemical territory is unquestionable. Despite empowering chemists with Herculean capabilities in complex molecule construction, contem…
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Single-atom dispersed Co–N–C catalyst: structure identification and performance for hydrogenative coupling of nitroarenes Open
The single-atom Co–N–C catalyst with the structure of CoN4C8-1-2O2 shows excellent performance for the chemoselective hydrogenation of nitroarenes to produce azo compounds under mild reaction conditions.
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Silyl Radical Activation of Alkyl Halides in Metallaphotoredox Catalysis: A Unique Pathway for Cross-Electrophile Coupling Open
A strategy for cross-electrophile coupling has been developed via the merger of photoredox and transition metal catalysis. In this report, we demonstrate the use of commercially available tris(trimethylsilyl)silane with metallaphotoredox c…
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Direct C(sp<sup>3</sup>)–H Cross Coupling Enabled by Catalytic Generation of Chlorine Radicals Open
Here we report the development of a C(sp3)-H cross-coupling platform enabled by the catalytic generation of chlorine radicals by nickel and photoredox catalysis. Aryl chlorides serve as both cross-coupling partners and the chlorine radical…
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The EC-Earth3 Earth system model for the Coupled Model Intercomparison Project 6 Open
The Earth system model EC-Earth3 for contributions to CMIP6 is documented here, with its flexible coupling framework, major model configurations, a methodology for ensuring the simulations are comparable across different high-performance c…
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Alkyl Carbon–Carbon Bond Formation by Nickel/Photoredox Cross‐Coupling Open
The union of photoredox and nickel catalysis has resulted in a renaissance in radical chemistry as well as in the use of nickel‐catalyzed transformations, specifically for carbon–carbon bond formation. Collectively, these advances address …
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Native functionality in triple catalytic cross-coupling: sp <sup>3</sup> C–H bonds as latent nucleophiles Open
A tip of the HAT to C-C bond formation Iridium and nickel are already a proven team for forging carbon-carbon bonds. The iridium harvests blue light from a simple light-emitting diode and orchestrates the coupling by the nickel. Shaw et al…
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Spontaneous Scalarization of Black Holes and Compact Stars from a Gauss-Bonnet Coupling Open
We identify a class of scalar-tensor theories with coupling between the scalar and the Gauss-Bonnet invariant that exhibit spontaneous scalarization for both black holes and compact stars. In particular, these theories formally admit all o…
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Atoms and molecules in cavities, from weak to strong coupling in quantum-electrodynamics (QED) chemistry Open
Significance Traditionally, quantum chemistry investigates molecular systems assuming that the photon field, which leads to the interaction of charged particles, is well approximated by the Coulomb interaction. On the other hand, quantum o…
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Nickel-Catalyzed Enantioselective Reductive Cross-Coupling Reactions Open
Nickel-catalyzed reductive cross-coupling reactions have emerged as powerful methods to join two electrophiles. These reactions have proven particularly useful for the coupling of sec-alkyl electrophiles to form stereogenic centers; howeve…
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Visualization of Higher-Order Topological Insulating Phases in Two-Dimensional Dielectric Photonic Crystals Open
The studies of topological phases of matter have been developed from condensed matter physics to photonic systems, resulting in fascinating designs of robust photonic devices. Recently, higher-order topological insulators have been investi…
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Five-Loop Running of the QCD Coupling Constant Open
We analytically compute the five-loop term in the beta function which governs the running of α_{s}-the quark-gluon coupling constant in QCD. The new term leads to a reduction of the theory uncertainty in α_{s} taken at the Z-boson scale as…
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Development of structure–function coupling in human brain networks during youth Open
The protracted development of structural and functional brain connectivity within distributed association networks coincides with improvements in higher-order cognitive processes such as executive function. However, it remains unclear how …
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Ground‐State Chemical Reactivity under Vibrational Coupling to the Vacuum Electromagnetic Field Open
The ground‐state deprotection of a simple alkynylsilane is studied under vibrational strong coupling to the zero‐point fluctuations, or vacuum electromagnetic field, of a resonant IR microfluidic cavity. The reaction rate decreased by a fa…
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Accelerated discovery of metallic glasses through iteration of machine learning and high-throughput experiments Open
Coupling artificial intelligence with high-throughput experimentation accelerates discovery of amorphous alloys.
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Challenges in design of Kitaev materials: Magnetic interactions from competing energy scales Open
In this study, we reanalyze the magnetic interactions in the Kitaev spin liquid candidate materials Na$_2$IrO$_3$, $\alpha$-RuCl$_3$, and $\alpha$-Li$_2$IrO$_3$ using nonperturbative exact diagonalization methods. These methods are more ap…
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Land–Atmosphere Interactions: The LoCo Perspective Open
Land–atmosphere (L-A) interactions are a main driver of Earth’s surface water and energy budgets; as such, they modulate near-surface climate, including clouds and precipitation, and can influence the persistence of extremes such as drough…
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Evasion of No-Hair Theorems and Novel Black-Hole Solutions in Gauss-Bonnet Theories Open
We consider a general Einstein-scalar-Gauss-Bonnet theory with a coupling function f(ϕ). We demonstrate that black-hole solutions appear as a generic feature of this theory since a regular horizon and an asymptotically flat solution may be…
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Status and Perspectives of Multiferroic Magnetoelectric Composite Materials and Applications Open
Multiferroic magnetoelectric (ME) composites are attractive materials for various electrically and magnetically cross-coupled devices. Many studies have been conducted on fundamental understanding, fabrication processes, and applications o…
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Correction: Corrigendum: Full Valley and Spin Polarizations in Strained Graphene with Rashba Spin Orbit Coupling and Magnetic Barrier Open
Scientific Reports 6: Article number: 21590; published online: 22 February 2016; updated: 23 January 2017 This Article contains errors in Reference 15 which was incorrectly given as: Song, Y., Zhai, F. & Guo, Y. Strain-tunable spin transpo…