Transport and optical properties of epitaxial Nd1.83Ce0.17Cu04?δ thin films

11th European Conference on Applied Superconductivity

Guarino, Anita^1 ; Parlato, Loredana^2 ; Bonavolontá, Carmela^2 ; Valentino, Massimo^2 ; Lisio, Corrado De^2 ; Leo, Antonio^1 ; Grimaldi, Gaia^1 ; Pace, Sandro^1 ; Pepe, Giampiero^2 ; Vecchione, Antonio^1 ; Nigro, Angela^1

CNR-SPIN Salerno and Dipartimento di Fisica E. R. Caianiello, Université di Salerno, Via Ponte Don Melillo, Fisciano (SA)

84084, Italy^1

CNR-SPIN Napoli, Université Federico II di Napoli, Dipartimento Scienze Fisiche, via Cinthia, Napoli

80126, Italy^2

关键词: Electrical transport measurements;    Electron-doped;    Femtosecond pumps;    Non-equilibrium carriers;    Pump-probe experiments;    SrTiO3 substrates;    Temperature range;    Time-resolved;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/1/012018/pdf
DOI  :  10.1088/1742-6596/507/1/012018

来源: IOP

【 摘 要 】

Electrical transport measurements and transient optical pump-probe experiments have been performed on epitaxial films of the electron doped Nd1.83Ce0.17Cu4-δcompound for studying the non-equilibrium carrier dynamics in this material. Samples have been grown on (001)-oriented SrTiO3substrates by dc sputtering in a mixed atmosphere of both Ar and O2. X-ray diffraction analysis and scanning electron microscope equipped with a wavelength dispersive spectroscopy detector have been used to characterize the structure and the composition of the thin films. Time-resolved femtosecond pump-and-probe spectroscopy has been also carried out on our samples in the temperature range 4.2K-300 K.