NICOLA MANCA

A programmable micromechanical resonator based on a VO2 thin film is reported. Multiple mechanical eigenfrequency states are programmed using Joule heating as local power source, gradually driving the phase transition of VO2 around its Metal-Insulator transition temperature. Phase coexistence of domains is used to tune the stiffness of the...

Two-terminal multistate memory elements based on VO2/TiO2 thin film microcantilevers are reported. Volatile and non-volatile multiple resistance states are programmed by current pulses at temperatures within the hysteretic region of the metal-insulator transition of VO2. The memory mechanism is based on current-induced creation of metallic...

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The spontaneous Hall effect (SHE), observed as a finite zero-field transverse signal, occurs in both conventional and unconventional superconductors, appearing as a peak near the superconducting transition temperature. The origin of SHE is debated, with proposed explanations ranging from intrinsic mechanisms, such as spontaneous symmetry...

Iron-based superconductors are under study for their potential for high-field applications due to their excellent superconducting properties such as low structural anisotropy, large upper critical fields and low field dependence of the critical current density. Between them, Fe(Se,Te) is simple to be synthesized and can be fabricated as a...