Measurement of the Electronic Grüneisen Constant Using Femtosecond Electron Diffraction
作者： Shouhua Nie , Xuan Wang , Hyuk Park , Richard Clinite , Jianming Cao
DOI: 10.1103/PHYSREVLETT.96.025901
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摘要: We report the first accurate measurement of electronic Gruneisen constant gamma(e) using a novel method employing new technique femtosecond electron diffraction. The contributions conduction electrons and lattice to thermal expansion are differentiated in time domain through transiently heating temperature well above that with optical pulses. By directly probing associated dynamics real diffraction, we able separate hot from heating, make an aluminum at room temperature. This approach opens possibility distinguishing magnetic materials low
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