Abstract
The scaling behavior of the effective activation energy of high-quality epitaxial (Formula presented)-oriented (Formula presented) thin films has been studied as functions of temperature and magnetic field. It has been found that the effective activation energy scales as (Formula presented) with exponent (Formula presented) which is similar to that of the (Formula presented) systems, while the field scaling (Formula presented) (α=-1) is the same as that of the (Formula presented) system. Our results suggest the following: (1) The temperature dependence of (Formula presented) is not necessarily correlated with the field dependence, but it might be governed by the dimensionality of the material, and (2) the field dependence might not be directly associated with the dimensionality of the material.
| Original language | English |
|---|---|
| Pages (from-to) | 7862-7865 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 56 |
| Issue number | 13 |
| DOIs | |
| State | Published - 1997 |
| Externally published | Yes |