Surface-confined molecular coolers for cryogenics
  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 variable applied magnetic field near liquid-helium temperature, we demonstrate that the molecules hold intact their magnetic properties, and therefore their cooling functionality, after their deposition. Our result represents a step forward towards the realization of a molecule-based microrefrigerating device for very low temperatures. 
Giulia Lorusso, Mark Jenkins, Pablo Gonzalez-Monje, Ana Arauzo, Javier   Sese, Daniel Ruiz-Molina, Olivier Roubeau and Marco...
cond-mat.mtrl-sci cond-mat.mes-hall