Fig. 4
From: Spin-Orbit induced phase-shift in Bi2Se3 Josephson junctions

Probing the anomalous phase shift. a Sketch of the setup consisting of two JIs fabricated on the same chip. The reference and anomalous JIs have identical area, respectively S and Sref, where \(S \simeq S_{{\mathrm{ref}}} \simeq 20.6\,\mu {\mathrm{m}}^2\). The Aluminum electrodes are 20 nm thick. From Table 1, in the absence of disorder, an anomalous phase shift induced by Rashba spin-orbit coupling can be generated only by an in-plane magnetic field By. b Voltage map showing the critical current oscillation of the two devices as a function of magnetic field B. The critical current of both devices oscillate due to the perpendicular component of the magnetic field Bz = B sin (θ), as sketched panel c. The oscillation frequency can be changed by mechanically tilting the sample, i.e by changing the angle θ between the plane containing the superconducting loop and the magnetic field B. The frequency of the anomalous device is larger than the reference as a consequence of the anomalous phase shift. The colored arrows are guide to the eyes, to help visualizing the increased phase shift in the anomalous device