Creation of metallic state high-pressure phase of Si using femtosecond laser-driven nano-shock

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The purpose of this study is to induce and quench the metallic state high-pressure phase of Si using femtosecond laser-driven nano shock and to create the metallic Si using only the femtosecond laser irradiation to Si. The high-pressure phase of Si exists only under pressure and does not remain after the pressure release due to the phase transitions to the original diamond phase and metastable phase using conventional methods. We succeeded for the first time in quenching the high-pressure phase of Si under atmospheric pressure using the femtosecond laser-driven shock wave.