Effect of magnetic field on over-doped HTc superconductors: Conflicting predictions of various HTc theories
Oron Zachar
Abstract
Following the recent NMR experiments by Gorny et al., we discuss the effect of a magnetic field on the superconducting Tc and the spin pseudo-gap T*. As a testable prediction, we argue that a spin pseudo-gap should also be observed in over-doped samples in a magnetic fied (while normally there is no pseudo-gap above Tc). We find that different theoretical approaches have marked differences in their predictions for over-doped HTc cuprates.
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