THz third-harmonic amplitude in nickelate films shows local maxima and minima at insulator-metal and magnetic transition temperatures when phase transitions are sharp, with a generalized theory offered for negative charge-transfer insulators.
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Evolution of terahertz third harmonic response across rare-earth nickelate phase-diagram
THz third-harmonic amplitude in nickelate films shows local maxima and minima at insulator-metal and magnetic transition temperatures when phase transitions are sharp, with a generalized theory offered for negative charge-transfer insulators.