Figure 1

Specific heat divided by temperature ($C/T$) and in-plane electrical resistivity (${\rho }_{ab}$) of ${\mathrm{CeRhIn}}_5$ as a function of temperature. $C/T$ and ${\rho }_{ab}$ are plotted on the left and right ordinates, respectively. Panels display the data for pressures of 1.58, 1.7, and 2.2 GPa in (a)–(c), respectively. At 1.58 and 1.7 GPa, anomalies in $C/T$ at high temperature denote the formation of long-range magnetic order and those at lower temperature are due to bulk superconductivity. The single anomaly in $C/T$ at 2.2 GPa ($>P_{c1}$) signals the development of superconductivity.Reuse & Permissions

Figure 2

Electrical resistivity of ${\mathrm{CeRhIn}}_5$ for current parallel (open symbols) and perpendicular (solid symbols) to the crystalline $c$ axis. Data from single crystals of ${\mathrm{CeRhIn}}_5$ from batch numbers 1 and 2 are shown in (a) and (b), respectively. Anisotropy at 1 bar in (b) is associated with antiferromagnetic order. (c) The in-plane electrical resistivity ${\rho }_{ab}$ on a semilogarithmical scale as a function of temperature for applied currents of 0.1 (solid squares) and 10 mA (open circles) at 1.58 GPa.Reuse & Permissions

Figure 3

(a) The in-plane electrical resistivity of ${\mathrm{CeRhIn}}_5$ at 1.45 GPa for current applied along [100] (solid squares) and [110] (open circles). For these experiments, two samples were prepared by cutting one crystal into two pieces, each with different crystallographic orientations. The minimum measurable resistivity of $1.8\mathrm{n}\Omega ·\mathrm{cm}$ is taken to be zero resistance. Inset: Pressure evolution of $T_{c,\mathrm{mid}}$ for the two current directions [100] and [110]. $T_{c,\mathrm{mid}}$, defined as the temperature at which the resistivity drops to 50% of its normal state value, is marked by side arrows and the onset of the SC transition is indicated by a vertical arrow. Dashed lines are guides to eyes. (b) Schematic illustration of the spatial variation of the amplitude of the textured superconducting state with respect to antiferromagnetic phases with antiferromagnetic ordering wave vectors of $Q1=(1/2,1/2,0.326)$ and $Q2=(1/2,1/2,0.391)$, respectively. The lines inside the domain describe spatial rotation of the Ce $4f$ spins, which shows the different pitch angles within the incommensurate $Q1$ and $Q2$ phases. (c) Illustration of the superconducting $d$-wave order parameter inside $Q2+\mathrm{SC}$ domains.Reuse & Permissions

Figure 4

(a) Electrical resistivity of ${\mathrm{CeRhIn}}_5$ at 1.76 GPa as a function of temperature in the superconducting transition region. Solid and open symbols represent the resistivity for current flow of 0.1 mA along [100] and [110], respectively. (b) Resistivity of ${\mathrm{CeRhIn}}_5$ at 1.76 GPa as a function of applied current for current flow along [100] (solid symbols) and [110] (open symbols) in the superconducting transition region at temperatures indicated in each panel.Reuse & Permissions