High-Pressure Resistivity Measurement Under High Quality Hydrostatic Condition

Abstract

In this article, a modified technique using diamond anvil cell (DAC) for four-probe resistivity measurement is introduced. The full detail of sample mounting technique in a DAC is described. We performed high-pressure transport measurements for a Mott insulator β′-ET₂ICl₂ up to 12 GPa. By comparing the result obtained by the cubic anvil cell measurement, we proved that a choice of small culet size, small samples, and encapsulating the sample provides high quality hydrostatic pressure in DAC.