Experimental tests for the relevance of two-level systems for electron dephasing

Abstract

The relevance of tunneling two-level systems (TLS) for electron dephasing in metals is analyzed. We demonstrate that if the concentration of TLS is sufficient to cause the observed dephasing rate, one also should expect quite substantial effects in the specific heat and ultrasound attenuation. In both cases TLS contribution should dominate the electronic one at low enough temperatures.

4 pages

References in corpus (2)

• Dephasing in Metals by Two-Level Systems in the 2-Channel-Kondo Regime
• Low-Temperature Dephasing in Disordered Conductors: the Effect of ``1/f'' Fluctuations

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• Physics at the FQMT'04 conference
• Dephasing by two-level systems at zero temperature by unitary evolution
• Transient electric current through an Aharonov-Bohm ring after switching of a Two-Level-System
• Electron Dephasing in Mesoscopic Metal Wires