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Gate-controlled supercurrent effect in dry-etched Dayem bridges of non-centrosymmetric niobium rhenium

Nano Research 2024年第7期17卷 6575-6581页

作者： Jennifer Koch Carla Cirillo Sebastiano Battisti Leon Ruf Zahra Makhdoumi Kakhaki Alessandro Paghi Armen Gulian Serafim Teknowijoyo giorgio de simoni Francesco Giazotto Carmine Attanasio Elke Scheer Angelo Di Bernardo department of Physics University of KonstanzUniversitätsstraße 1078464 KonstanzGermany CNR-Spin c/o Universitàdegli Studi di Salernovia Giovanni Paolo II 13284084 Fisciano(SA)Italy NEST Istituto Nanoscienze-CNR and Scuola Normale SuperiorePiazza San Silvestro 1256127 PisaItaly Dipartimento di Fisica“E.R.Caianiello” Universitàdegli Studi di SalernoVia Giovanni Paolo II 13284084 Fisciano(SA)Italy Advanced Physics Laboratory Institute for Quantum StudiesChapman UniversityBurtonsvilleMD 20866USA

The application of a gate voltage to control the superconducting current flowing through a nanoscale superconducting constriction,named as gate-controlled supercurrent(GCS),has raised great interest for fundamental and technological *** gain a deeper understanding of this effect and develop superconducting technologies based on it,the material and physical parameters crucial for the GCS effect must be ***-down fabrication protocols should also be optimized to increase device scalability,although studies suggest that top-down fabricated devices are more resilient to show a ***,we investigate gated superconducting nanobridges made with a top-down fabrication process from thin films of the noncentrosymmetric superconductor niobium rhenium with varying ratios of the constituents(NbRe).Unlike other devices previously reported and made with a top-down approach,our NbRe devices systematically exhibit a GCS effect when they were fabricated from NbRe thin films with small grain size and etched in specific *** observations pave the way for the realization of top-down-made GCS devices with high *** results also imply that physical parameters like structural disorder and surface physical properties of the nanobridges,which can be in turn modified by the fabrication process,are crucial for a GCS observation,providing therefore also important insights into the physics underlying the GCS effect.

关键词： superconductivity non-centrosymmetric superconductors superconducting devices gated devices gate-controlled supercurrent top-down fabrication

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Giovanni Battista Naldini's Pietà:Humility and Love

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Cultural and Religious Studies 2021年第11期9卷 493-520页

作者： Liana de Girolami Cheney University of Massachusetts Lowell LowellUSA

In 1564,in honor of the death of Michelangelo Buonarroti(1475-1564),an artistic extravaganza was invented by the Benedictine monk Vincenzo Borghini(1515-1580)-prior of the hospital of the innocents,humanist,and administrator of the Florentine Academy of design(Accademia del Disegno or Florentine Academy)-and was implemented by giorgio Vasari(1511-1574)-artist,writer,and artistic director of the Academy,who engaged his Florentine assistants to work on the execution of the tomb in the Basilica of Santa Croce in Florence(see Figure 1).The commission of Michelangelo’s tomb was prompted by his nephew,Lionardo[Leonardo]simoni-Buonarroti(1522-1599),and the Grand Duke of Tuscany,Cosimo I de’Medici(1519-1574).The tomb was completed in *** designed the architectural monument,and his assistants,members of the Florentine Academy,collaborated in the following manner:The sculptures of the Fine Arts were carved by Giovanni Bandini(1540-1599),who represented the personification of architecture;Valerio di Simone Cioli(1529-1599),who represented the personification of Sculpture;and Battista Lorenzi(1527-1594),who represented the personification of Painting and the portrait bust of *** Battista Naldini(1537-1591)completed al fresco the burning urns,the purple-colored doorway of the tomb,the suspended canopy,and the Pietàin the center of the marble *** latter artistic contribution is the topic of this essay.

关键词： Pietà Lamentation humility giorgio Vasari Giovanni Battista Naldini Christian iconography Mannerism Michelangelo's tomb Franciscan Order Counter-Reformation

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