Figure 1

(Color online) Resistance behavior as a function of temperature for a nearly stoichiometric MBE grown (black solid), a ruthenium poor MBE grown (red dashed), and a PLD grown (orange dotted) $\mathrm{Sr}\mathrm{Ru}{\mathrm{O}}_3$ film. The resistance has been normalized with respect to the values at $300\mathrm{K}$. The inset shows the derivative of each line; $T_c$ has been set as the point where the derivative is maximal. The resistivity $\left(\rho \right)$ of the stoichiometric MBE grown $\mathrm{Sr}\mathrm{Ru}{\mathrm{O}}_3$ at room temperature is about $190\mu \Omega \mathrm{cm}$ and its carrier density at $4\mathrm{K}$ is $2\times {10}^{22}{\mathrm{cm}}^{-3}$.Reuse & Permissions

Figure 2

(Color online) (a) Comparison of $\theta ∕2\theta$ XRD scans of two thick $\left(330\mathrm{nm}\right)$ films grown by PLD (orange dashed) and MBE (black solid). The fringes indicate good crystalline quality of the films; the shift in peak position indicates that the PLD film has a larger out-of-plane lattice parameter [(110 direction)]. (b) A comparison between the volume of the $\mathrm{Sr}\mathrm{Ru}{\mathrm{O}}_3$ unit cell in thin films on $\mathrm{Sr}\mathrm{Ti}{\mathrm{O}}_3$ substrates grown by either MBE or PLD and their transport properties: room temperature (red circles) and low temperature resistivity (blue triangles) on the right $y$ axis and residual resistance ratio (black squares) on the left $y$ axis. The dashed lines are guides for the eyes.Reuse & Permissions

Figure 3

(Color online) (a) UPS spectra at room temperature of three $\mathrm{Sr}\mathrm{Ru}{\mathrm{O}}_3$ films: a MBE film (black solid), a ruthenium poor MBE film (red dashed), and a PLD film (orange dotted) (same samples as in Fig. 1). All samples show states at the Fermi edge and a Ru $t_{2g}$ peak close to the Fermi level. The spectra have been normalized on the $t_{2g}$ peak. (b) XPS detail spectra at room temperature of the $\mathrm{Ru}3d$ doublet of a stoichiometric film (top) and a ruthenium poor film (bottom) including fitting of the spectra using three spin orbit coupled doublets represented by Gaussians (two pairs orange dashed or dotted, the third pair yellow filled); the overlapping $\mathrm{Sr}2p_{1∕2}$ peak (Gaussian) was subtracted for both spectra. In the spectrum of stoichiometric film, more pronounced screened peaks at lower binding energy (yellow filled) are needed to give a good fit, indicative of less correlated behavior. For the ruthenium poor spectrum, the screened peaks are almost nonexistent.Reuse & Permissions