We present both electric-field and photo-excited control of the carrier concentration in GdN. There is no evidence in the results of a carrier-mediated contribution to the Gd-Gd exchange interaction that has been suggested to explain a measured Curie temperature that is much higher than obtained within theoretical treatments. Persistent carrier concentrations seen in both the field-effect and photo-induced conductivities point to a distribution of long-lived trap states below the conduction band, very likely centered at nitrogen vacancies.
No takes yet. Share an insight, caveat, or question.
A 2013 study studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: