Fig. 4: Temperature-dependent zero-field transverse voltage in PdCoO2.
From: Directional ballistic transport in the two-dimensional metal PdCoO2
a, Sketch of several representative electronic trajectories in two transport bars cut along low-symmetry directions of the crystal, for example, ±3°. The corresponding orientation of the Fermi surface and velocities are shown on the left in yellow, blue and red. b, An FIB microstructured single crystal of PdCoO2 with a current path cut along the ±3° directions with three pairs of transverse voltage contacts along each orientation, denoted VA, VB, VC, VD and VE. c, The extracted transverse resistivities increase from the noise floor in the diffusive regime to a finite and anti-symmetric value in the ballistic regime. A longitudinal background stemming from non-ideal transverse contact alignment (about 100 nm displacement) has been subtracted. The raw data, sample dimensions and corresponding analysis are presented in Supplementary Note 9. d, Results from Boltzmann transport simulations taking into account the realistic Fermi surface shape as well as the temperature-dependent bulk mean free path (see Supplementary Note 5 for details).
