Relaxation of the resistive superconducting state in boron-doped diamond films
作者： A Kardakova , A Shishkin , A Semenov , GN Goltsman , S Ryabchun
DOI: 10.1103/PHYSREVB.93.064506
关键词: Atmospheric temperature range 、 Superconductivity 、 Relaxation (NMR) 、 Electron 、 Resistive touchscreen 、 Scattering 、 Diamond 、 Phonon 、 Condensed matter physics 、 Materials science
摘要: We report a study of the relaxation time restoration resistive superconducting state in single crystalline boron-doped diamond using amplitude-modulated absorption (sub-)THz radiation (AMAR). The films grown on an insulating substrate have low carrier density about 2.5×1021cm?3 and critical temperature 2K. By changing modulation frequency we find high-frequency rolloff which associate with characteristic energy between electron phonon systems or for nonequilibrium superconductivity. Our main result is that electron-phonon scattering varies clearly as T?2, over accessible range 1.7 to 2.2 K. In addition, find, upon approaching Tc, evidence increasing both sides Tc.
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