Binary Iron selenide (FeSe) thin films have been widely studied for years to unveil the high temperature superconductivity in iron-based superconductors. However, the origin of superconduct-ing transition in this unconventional system is still under debate and worth deep investigations. In the present work, the transition from insulator to superconductor was achieved in non-superconducting FeSe ultrathin films (~8 nm) grown on calcium fluoride substrates via a simple in-situ Mg-coating by a pulsed laser deposition technique. The Mg-coated FeSe film with an optimized amount of Mg exhibited a superconducting critical temperature as 9.7 K and an upper critical field as 30.9 T. Through systematic characterizations on phase identification, carrier transport behavior and high-resolution microstructural features, the revival of superconductivity in FeSe ultrathin films is mostly attributed to the highly crystallized FeSe and extra electron doping received from external Mg-coating process. Alt
The Department of Science and Technology (DOST) has disclosed that an "efficient and low-cost" superconductor thin film fabrication method has been developed by researchers from the University of the Philippines (UP)- National Institute of Physics (NIP).
(PIXABY) DOST Secretary Fortunato “Boy” T
The Department of Science and Technology (DOST) has disclosed that an "efficient and low-cost" superconductor thin film fabrication method has been developed by researchers from the University of the Philippines (UP)- National Institute of Physics (NIP).
(PIXABY) DOST Secretary Fortunato “Boy” T