Oliver Schilter, Alain Vaucher, et al.
Digital Discovery
Hall-probe measurements of an YBa2Cu3O7- crystal in the range 0.11 K show a temperature-independent time-logarithmic magnetic relaxation. These results rule out conventional thermally activated flux creep, which predicts a T2/3 dependence at the lowest temperatures if one takes into account the dependence of the barrier on driving force in a simple one-dimensional model. They are consistent with a phenomenological theory assuming a quantum tunneling process for vortex kink motion. © 1991 The American Physical Society.
Oliver Schilter, Alain Vaucher, et al.
Digital Discovery
Min Yang, Jeremy Schaub, et al.
Technical Digest-International Electron Devices Meeting
A.B. McLean, R.H. Williams
Journal of Physics C: Solid State Physics
I. Morgenstern, K.A. Müller, et al.
Physica B: Physics of Condensed Matter