Induced changes in the distribution of the tunneling states
- Katholieke Universiteit Leuven, Department of Physics, Celestijnenlaan 200D, B-3001 Leuven (Belgium)
Ultrasonic attenuation measurements in neutron-irradiated quartz show distinct changes upon heat treatment in the behavior at the so-called plateau region. Since this plateau, observed in glasses and defective crystals such as neutron-irradiated quartz, is attributed to the specific distribution of the relaxation rates of the tunneling states (TS), the observations show that heat treatment can induce significant changes in this distribution, which provides an interesting tool to get more information about the nature of the tunneling states. The analysis in the framework of the tunneling model gives evidence that the TS with long relaxation times vanish upon heat treatment, which can be interpreted in terms of the disappearance of tunneling states with large mass.
- OSTI ID:
- 165118
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 13 Vol. 51; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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