arXiv subjects

Jeong Il Oh

Publications and source records attributed to Jeong Il Oh.

2 recordsLinked to original sources

arXiv2010

Upper Critical Field in the Molecular Organic Superconductor (DMET)2I3

We report the temperature dependence of the upper critical magnetic field in the quasi-onedimensional molecular organic superconductor (DMET)2I3, for magnetic field applied along the intrachain, interchain, and interplane directions. The upper critical field tends to saturation at low temperature for field in all directions and does not exceed the Pauli paramagnetic limit. Superconductivity in (DMET)2I3 thus appears to be conventional spin singlet, in contrast to the status of the isostructural Bechgaard salts. We also discuss a magnetic field-induced dimensional crossover effect in the normal metallic state which had previously appeared to be associated with superconductivity.

cond-mat.supr-con↗

arXiv2010

Observation and Simulation of All Angular Magnetoresistance Oscillation Effects in the Quasi-One Dimensional Organic Conductor (DMET)2I3

Measurements and calculations of magnetotransport in the molecular organic conductor (DMET)2I3 detect and simulate all known angular magnetoresistance oscillation (AMRO) phenomena for quasi-one dimensional (Q1D) systems. Employing the true triclinic crystal structure in the calculations, these results address the mystery of the putative vanishing of the primary AMRO phenomenon, the Lebed magic angle effect, for orientations in which it was expected to be strongest. They also show a common origin for Lebed and so-called "LN" oscillations, and confirm the generalized nature of AMRO in Q1D systems.

cond-mat.str-el↗