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- Title
The Meyer–Neldel Rule in the Processes of Thermal Emission and Hole Capture in Ge/Si Quantum Dots.
- Authors
Yakimov, A. I.; Dvurechenski&icaron;, A. V.; Nikiforov, A. I.; Mikhalev, G. Yu.
- Abstract
The hole thermal-emission rates and the cross sections for hole capture to the bound states in Ge quantum dots in Si are determined by admittance spectroscopy. The capture cross sections and the activation energies for emission rate are found to be related to each other by the Meyer–Neldel rule with a characteristic energy of 27±3 meV, which does not depend on the quantum-dot size. It is established that the capture cross section changes with temperature following the activation law. The experimental data are evidence of a unified multiphonon mechanism for the activation processes of hole transitions from the Ge quantum dots to the Si valence band and hole capture back into the quantum dots. © 2004 MAIK “Nauka / Interperiodica”.
- Subjects
BOUND states; ENERGY levels (Quantum mechanics); NUCLEAR physics; QUANTUM dots; QUANTUM electronics; NUCLEAR cross sections
- Publication
JETP Letters, 2004, Vol 80, Issue 5, p321
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1825114