Helmholtz-Zentrum Dresden-Rossendorf (HZDR) Superconducting Ferromagnetic Nanodiamond

Limit: 150 words; Count: 148 words) Synthetic diamond is a promising candidate for the next-generation electronics due to its high breakdown voltage, thermal conductivity and tunable electronic properties upon doping. Superconductivity, discovered in boron-doped diamond, has extended the application range of this material even further. The magnetic properties of diamond, however, still remain rather unexploited, leaving the material an unmined treasure in the fields of magnetoelectronics and spintronics. Here we report on the observation of high-temperature ferromagnetism, giant positive magnetoresistance and anomalous Hall effect in hydrogenated boron-doped nanodiamond films. Our superconducting ferromagnetic nanodiamond films with a Curie temperature TCurie > 400 K and a superconducting transition temperature Tc ~ 3 K, provide a powerful platform for investigating the competing interplay between ferromagnetism and superconductivity. Our research reveals the presence of an intriguing precursor phase, in which spin fluctuations intervene as a result of the interplay between the two antagonistic strongly