Figure 1
From: Superconductivity Bordering Rashba Type Topological Transition
(a,b) Resistance of the BiTeI single crystal as function of temperature in the low pressure phase shows the topological quantum phase transition at ~2 GPa; (c,d) Resistance of the BiTeI single crystal as function of temperature in the high pressure range of 7 GPa to 26 GPa, which shows superconductivity at 5.3 K at 8.0 GPa. The inset of (c) is an enlargement of resistance versus temperature around the superconducting region at 14 GPa; the differential of resistance over temperature (dR/dT) shows the onset, middle, and zero transition temperatures, respectively.
