Back to Search
Start Over
Acoustic properties of metallic glasses at low temperatures: Tunneling systems and their dephasing
- Source :
- Physical Review B. 103
- Publication Year :
- 2021
- Publisher :
- American Physical Society (APS), 2021.
-
Abstract
- The low temperature acoustic properties of bulk metallic glasses measured over a broad range of frequencies rigorously test the predictions of the standard tunneling model. The strength of these experiments and their analyses is mainly based on the interaction of the tunneling states with conduction electrons or quasiparticles in the superconducting state. A new series of experiments at kHz and GHz frequencies on the same sample material essentially confirms previous measurements and their discrepancies with theoretical predictions. These discrepancies can be lifted by considering more correctly the line widths of the dominating two-level atomic-tunneling systems. In fact, dephasing caused or mediated by interaction with conduction electrons may lead to particularly large line widths and destroy the tunneling sytems' two-level character in the normal conducting state.
- Subjects :
- Superconductivity
Range (particle radiation)
Amorphous metal
Materials science
Condensed matter physics
Dephasing
FOS: Physical sciences
Disordered Systems and Neural Networks (cond-mat.dis-nn)
02 engineering and technology
Electron
Condensed Matter - Disordered Systems and Neural Networks
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Thermal conduction
01 natural sciences
0103 physical sciences
Quasiparticle
010306 general physics
0210 nano-technology
Quantum tunnelling
Subjects
Details
- ISSN :
- 24699969 and 24699950
- Volume :
- 103
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi.dedup.....5b83fe390d6e773d440ae2cc42315238