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Shaping Graphene Superconductivity with Nanometer Precision.
Cortés-Del Río, Eva; Trivini, Stefano; Pascual, José I; Cherkez, Vladimir; Mallet, Pierre; Veuillen, Jean-Yves; Cuevas, Juan C; Brihuega, Iván.
Afiliación
  • Cortés-Del Río E; Departamento Física de la Materia Condensada, Universidad Autónoma de Madrid, Madrid, E-28049, Spain.
  • Trivini S; Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, Madrid, E-28049, Spain.
  • Pascual JI; CIC nanoGUNE-BRTA, Donostia-San Sebastián, 20018, Spain.
  • Cherkez V; CIC nanoGUNE-BRTA, Donostia-San Sebastián, 20018, Spain.
  • Mallet P; Ikerbasque, Basque Foundation for Science, Bilbao, 48013, Spain.
  • Veuillen JY; Université Grenoble Alpes, CNRS, Institut Néel, Grenoble, F-38400, France.
  • Cuevas JC; CNRS, Institut Neel, Grenoble, F-38042, France.
  • Brihuega I; Université Grenoble Alpes, CNRS, Institut Néel, Grenoble, F-38400, France.
Small ; 20(20): e2308439, 2024 May.
Article en En | MEDLINE | ID: mdl-38112230
ABSTRACT
Graphene holds great potential for superconductivity due to its pure 2D nature, the ability to tune its carrier density through electrostatic gating, and its unique, relativistic-like electronic properties. At present, still far from controlling and understanding graphene superconductivity, mainly because the selective introduction of superconducting properties to graphene is experimentally very challenging. Here, a method is developed that enables shaping at will graphene superconductivity through a precise control of graphene-superconductor junctions. The method combines the proximity effect with scanning tunnelling microscope (STM) manipulation capabilities. Pb nano-islands are first grown that locally induce superconductivity in graphene. Using a STM, Pb nano-islands can be selectively displaced, over different types of graphene surfaces, with nanometre scale precision, in any direction, over distances of hundreds of nanometres. This opens an exciting playground where a large number of predefined graphene-superconductor hybrid structures can be investigated with atomic scale precision. To illustrate the potential, a series of experiments are performed, rationalized by the quasi-classical theory of superconductivity, going from the fundamental understanding of superconductor-graphene-superconductor heterostructures to the construction of superconductor nanocorrals, further used as "portable" experimental probes of local magnetic moments in graphene.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: España Pais de publicación: Alemania

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: España Pais de publicación: Alemania