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Tuning phase transitions in FeSe thin flakes by field-effect transistor with solid ion conductor as the gate dielectric

Tuning phase transitions in FeSe thin flakes by field-effect transistor with solid ion conductor as the gate dielectric

We develop a novel field effect transistor (FET) device using solid ion conductor (SIC) as a gate dielectric, and we can tune the carrier density of FeSe by driving lithium ions in and out of the FeSe thin flakes, and consequently control the material properties and its phase transitions. A …