Phenomenological Approach to the Coexistence of Planar Antiferromagnetism with High T sub C Type II Superconductivity

摘要

A phenomenological study in d-spatial dimensions is presented for the coexistence of planar antiferromagnetism and type II superconductivity. In this approach critical temperatures in the range 30-100 K arise due to the proposed coupling of magnons and conduction electron-pairs. We discuss some remarkable features of oxide ceramics, including a longer London penetration depth, shorter coherence length, lower H/sub cl/, higher H/sub c2/, large current densities, and large pinning force. (author). 45 refs, 3 figs. (Atomindex citation 19:053767)