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arXiv · 1205.4982

Universal dielectric loss in amorphous solids from simultaneous bias and microwave field

Alexander L. Burin·Moe S. Khalil·Kevin D. Osborn
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Abstract

We derive the ac dielectric loss in glasses due to resonant processes created by two-level systems and a swept electric field bias. It is shown that at sufficiently large ac fields and bias sweep rates the nonequilibrium loss tangent created by the two fields approaches a universal maximum determined by the bare linear dielectric permittivity. In addition this nonequilibrium loss tangent is derived for a range of bias sweep rates and ac amplitudes and show that the loss tangent creates a predicted loss function that can be understood in a Landau-Zener theory and which can be used to extract the TLS density, dipole moment, and relaxation rate.

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Alexander L. Burin, Moe S. Khalil, Kevin D. Osborn. 2013-03-15. Universal dielectric loss in amorphous solids from simultaneous bias and microwave field. https://doi.org/10.1103/physrevlett.110.157002

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