Publication Type
Journal
Journal Name
Physica C
Publication Date
Page Numbers
143 to 149
Volume
471
Issue
5-6
Abstract
We show using a combination of powder X-ray and neutron diffraction, first principles calculations,
temperature- and field-dependent magnetization, heat capacity and resistivity data that the
superconducting behavior of ‘Sr4V2O6Fe2As2’ is dependent on synthesis conditions, particularly,
heating profiles result in unintentional chemical doping. This compound can be tuned from a state
in which the vanadium electrons are itinerant with a high electronic density of states, to a state
where the vanadium-oxide layers are insulating and presumably magnetic.
