Pressure-induced insulating state in an organic superconductor

Pressure-induced insulating state in an organic superconductor

Transition to a Superconductor with Insulating Cavities

– An extreme type II superconductor with internal insulating regions, namely cavities, is studied here. We find that the cavity-bearing superconductor has lower energy than the defectfree superconductor above a critical magnetic induction B∗ for insulating cavities but not for metallic ones. Using a numerical approach for the Ginzburg-Landau theory we compute and compare free energy densities f...

Pressure-induced insulating state in Ba1−xRxIrO3 (R=Gd, Eu) single crystals

O. B. Korneta,1,2 S. Chikara,1,2 S. Parkin,1,3 L. E. DeLong,1,2 P. Schlottmann,4 and G. Cao1,2,* 1Center for Advanced Materials, University of Kentucky, Lexington, Kentucky 40506, USA 2Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA 3Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, USA 4Department of Physics, Florida State U...

Persistent Fe moments in the normal-state collapsed-tetragonal phase of the pressure-induced superconductor Ca0.67Sr0.33Fe2As2

J. R. Jeffries,1 N. P. Butch,1,2 M. J. Lipp,1 J. A. Bradley,1 K. Kirshenbaum,3 S. R. Saha,3 J. Paglione,3 C. Kenney-Benson,4 Y. Xiao,4 P. Chow,4 and W. J. Evans1 1Condensed Matter and Materials Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA 2NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 3Ce...

Enhanced critical current density in the pressure-induced magnetic state of the high-temperature superconductor FeSe

We investigate the relation of the critical current density (Jc) and the remarkably increased superconducting transition temperature (Tc) for the FeSe single crystals under pressures up to 2.43 GPa, where the Tc is increased by ~8 K/GPa. The critical current density corresponding to the free flux flow is monotonically enhanced by pressure which is due to the increase in Tc, whereas the depinnin...