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- Sekiya, R., et al.
(författare)
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Search for η'-mesic nuclei in 12C(p, dp) reaction with the WASA detector at GSI-FRS
- 2024
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Ingår i: Nuovo cimento della societa italiana de fisica. C, Geophysics and space physics. - : Società Italiana di Fisica. - 1124-1896 .- 1826-9885. ; 47:4
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Tidskriftsartikel (refereegranskat)abstract
- We conducted an experimental search for η′-mesic nuclei, bound systems of an η′ meson and a nucleus, in 12C(p, dp) reactions. We measured the missing mass in the (p, d) reaction to obtain the mass spectrum of the reaction product near the η′ emission threshold. Forward-emitted deuterons were momentum-analyzed in the FRS of GSI. We installed a nearly 4π detector WASA near the 12C target to effectively select formation and decay of the η′-mesic nuclei. We are presently finalizing the analysis.
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- Mourtzis, Dimitris, et al.
(författare)
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Modelling, Design and Simulation as-a-Service Based on Extended Reality (XR) in Industry 4.0
- 2024
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Ingår i: CIRP Novel Topics in Production Engineering: Volume 1. - : Springer Nature. ; , s. 99-143
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Modelling and Simulation (M&S) are critical capabilities for Cloud Computing. M&S products and services are valuable resources that have to be easily accessible and available on demand in a cost-effective way to users; they provide the required level of agility so that capabilities can be integrated quickly and easily. To address new design and manufacturing challenges in Industry 4.0, digital-driven technologies use simulation tools, Computer Aided Design (CAD), Product Lifecycle Management (PLM) systems and Extended Reality (XR) services to support digital design and information flow throughout a product lifecycle. Thus, XR creates new business value by improving the customer journey, optimizing employee performance, and developing new content and services. The vision of Modelling and Simulation as a Service (MSaaS) aims to make products, data, and processes easily accessible and available on-demand to all users to improve operational effectiveness. The scope of this essay is to provide a comprehensive vision of MSaaS for products, data, and processes in combination with XR services to improve operational effectiveness under the framework of Industry 4.0.
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- Posey, Victoria A., et al.
(författare)
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Two-dimensional heavy fermions in the van der Waals metal CeSiI
- 2024
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Ingår i: Nature. - : Springer Nature. - 0028-0836 .- 1476-4687. ; 625:7995, s. 483-488
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Tidskriftsartikel (refereegranskat)abstract
- Heavy-fermion metals are prototype systems for observing emergent quantum phases driven by electronic interactions1-6. A long-standing aspiration is the dimensional reduction of these materials to exert control over their quantum phases7-11, which remains a significant challenge because traditional intermetallic heavy-fermion compounds have three-dimensional atomic and electronic structures. Here we report comprehensive thermodynamic and spectroscopic evidence of an antiferromagnetically ordered heavy-fermion ground state in CeSiI, an intermetallic comprising two-dimensional (2D) metallic sheets held together by weak interlayer van der Waals (vdW) interactions. Owing to its vdW nature, CeSiI has a quasi-2D electronic structure, and we can control its physical dimension through exfoliation. The emergence of coherent hybridization of f and conduction electrons at low temperature is supported by the temperature evolution of angle-resolved photoemission and scanning tunnelling spectra near the Fermi level and by heat capacity measurements. Electrical transport measurements on few-layer flakes reveal heavy-fermion behaviour and magnetic order down to the ultra-thin regime. Our work establishes CeSiI and related materials as a unique platform for studying dimensionally confined heavy fermions in bulk crystals and employing 2D device fabrication techniques and vdW heterostructures12 to manipulate the interplay between Kondo screening, magnetic order and proximity effects.
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