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Surface-Confined Molecular Coolers for Cryogenics

Authors

  • Giulia Lorusso,

    1. Instituto de Ciencia de Materiales de Aragón (ICMA) and Departamento, de Física de la Materia Condensada, CSIC - Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
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  • Mark Jenkins,

    1. Instituto de Ciencia de Materiales de Aragón (ICMA) and Departamento, de Física de la Materia Condensada, CSIC - Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
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  • Pablo González-Monje,

    1. Centre d'Investigació en Nanociencia i Nanotecnologia (CIN2, CSIC), Esfera UAB, Edifici CM7, Campus UAB, 08193 Cerdanyola del Vallès, Spain
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  • Ana Arauzo,

    1. Servicio de Medidas Físicas, Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
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  • Javier Sesé,

    1. Instituto de Nanociencia de Aragón (INA) and Departamento de Física de la Materia Condensada, Universidad de Zaragoza, C/Mariano Esquillor s/n, 50018 Zaragoza, Spain
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  • Daniel Ruiz-Molina,

    1. Centre d'Investigació en Nanociencia i Nanotecnologia (CIN2, CSIC), Esfera UAB, Edifici CM7, Campus UAB, 08193 Cerdanyola del Vallès, Spain
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  • Olivier Roubeau,

    1. Instituto de Ciencia de Materiales de Aragón (ICMA) and Departamento, de Física de la Materia Condensada, CSIC - Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
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  • Marco Evangelisti

    Corresponding author
    1. Instituto de Ciencia de Materiales de Aragón (ICMA) and Departamento, de Física de la Materia Condensada, CSIC - Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
    • Instituto de Ciencia de Materiales de Aragón (ICMA) and Departamento, de Física de la Materia Condensada, CSIC - Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
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Abstract

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An excellent molecule-based cryogenic magnetic refrigerant, gadolinium acetate tetrahydrate, is here used to decorate selected portions of silicon substrate. By quantitative magnetic force microscopy for a variable applied magnetic field near liquid-helium temperature, the molecules are demonstrated to hold their magnetic properties intact, and therefore their cooling functionality, after their deposition. These results represent a step forward towards the realization of a molecule-based micro-refrigerating device at very low temperatures.

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