Loss of heat relaxation in the superconducting and nonsuperconducting ceramics near Tc

Tatiana Timofeevna Ermolaeva

doi:10.1117/12.24363

1 March 1991 Loss of heat relaxation in the superconducting and nonsuperconducting ceramics near Tc

Tatiana Timofeevna Ermolaeva

Proceedings Volume 1361, Physical Concepts of Materials for Novel Optoelectronic Device Applications I: Materials Growth and Characterization; (1991) https://doi.org/10.1117/12.24363
Event: Physical Concepts of Materials for Novel Optoelectronic Device Applications, 1990, Aachen, Germany

Abstract

Using Deep Level Transient Spectroscopy (DLTS), we have studied a GaAs/GaInAs/GaAs single quantum well. The DLTS spectra exhibit both a peak and a plateau : the peak is associated with the thermionic emission of electrons and the plateau (ranging from 4 to 30 K) corresponds to a quasi constant emission rate associated with a tunneling emission of electrons from the well towards the conduction band. Varying the polarization applied to the sample during the DLTS measurements, it is possible to observe only one phenomenon : thermionic or tunneling emission. A modelisation of the tunneling effect is proposed, based on Oppenheimer's approach as to the WKB approximation. Finally, the experimental results are discussed.

Citation Download Citation

Tatiana Timofeevna Ermolaeva "Loss of heat relaxation in the superconducting and nonsuperconducting ceramics near Tc", Proc. SPIE 1361, Physical Concepts of Materials for Novel Optoelectronic Device Applications I: Materials Growth and Characterization, (1 March 1991); https://doi.org/10.1117/12.24363

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