Nonlinear dielectric response at the excess wing of glass-forming liquids

Abstract

We present nonlinear dielectric measurements of glass-forming glycerol and propylene carbonate applying electrical fields up to 671 kV/cm. The measurements extend to sufficiently high frequencies to allow for the investigation of the nonlinear behavior in the regime of the so-far mysterious excess wing, showing up in the loss spectra of many glass formers as a second power law at high frequencies. Surprisingly, we find a complete lack of nonlinear behavior in the excess wing, in marked contrast to the alpha-relaxation where, in agreement with previous reports, a strong increase of dielectric constant and loss is found.

8 pages (including 3 pages Supplementary Information), 4 + 1 figures. Revised according to suggestions of referees

References in corpus (3)

• Glassy Aging Dynamics
• Active and Nonlinear Microrheology in Dense Colloidal Suspensions
• High-frequency dynamics of type-B glass formers investigated by broadband dielectric spectroscopy

Cited by in corpus (5)

• Dynamic Correlation Length Scales under Isochronal Conditions
• Cooperativity and Heterogeneity in Plastic Crystals Studied by Nonlinear Dielectric Spectroscopy
• Nonlinear dielectric response of Debye, alpha, and beta relaxation in 1-propanol
• Unifying different interpretations of the nonlinear response in glass-forming liquids
• Low temperature dielectric relaxation study of aqueous solutions of diethylsulfoxide