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Proceedings Paper

Loss of heat relaxation in the superconducting and nonsuperconducting ceramics near Tc
Author(s): Tatiana Timofeevna Ermolaeva
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Paper 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.

Paper Details

Date Published: 1 March 1991
PDF: 2 pages
Proc. SPIE 1361, Physical Concepts of Materials for Novel Optoelectronic Device Applications I: Materials Growth and Characterization, (1 March 1991); doi: 10.1117/12.24363
Show Author Affiliations
Tatiana Timofeevna Ermolaeva, Leningrad State Univ. (Russia)


Published in SPIE Proceedings Vol. 1361:
Physical Concepts of Materials for Novel Optoelectronic Device Applications I: Materials Growth and Characterization

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