Abstract
Spectral dependences of charge carrier relaxation rates, γe-e(ħω) and γ e-ph(ħω), were observed in Au and Cu films and YBa2Cu3O7-δ high-Tc superconductor films. The relaxation rates decreased substantially in the spectral region corresponding to interband transitions to the Fermi level region (ħωAu = 2.45 eV, ħωCu = 2.15 eV, and ħ ω1 = 1.89 eV and ħω2 = 2.08 eV for YBa2Cu3O7-δ). This relaxation deceleration opens up possibilities for developing a new method, based on the spectral dependences of relaxation rates, for the determination of the Fermi level position and the parameters of electron-electron and electron-phonon interactions on the one hand and for studying deviations from the Fermi-liquid behavior in strongly correlated electronic systems. The linear γe-e (ħω) ∝ |ħω− EF| spectral dependence was observed for a YBa2Cu3O7-δ film near ħω2 = 2.08 eV, which may be evidence of a non-Fermi-liquid behavior of the electronic subsystem.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
