1205.4982 (Alexander L. Burin et al.)

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

Alexander L. Burin, Moe S. Khalil, Kevin D. Osborn

We calculate the microwave dielectric loss of an ensemble of two-level systems in amorphous solids during the application of a time-varying electric bias field. We find that this loss becomes universal in a wide range of temperatures and frequencies of the AC drive field, corresponding to the bare linear dielectric permittivity in the low-temperature limit. This non-equilibrium theory allows the separate extraction of the TLS density and their dipole size in experiments.

View original: http://arxiv.org/abs/1205.4982