Figure 5: Spin-resolved ARPES results.
From: Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd
(a) Spin-integrated ARPES spectrum of surface states. The blue dashed lines and number indicate the momentum positions at which SR-ARPES measurements were carried out. (b) Spin-resolved energy-dispersive curvess (blue and red circles for up and down spin) and the in-plane spin polarization (red circle with error bar -right axis) at momentum position #1. (c) Same as b for momentum position #2. Helical spin-texture is observed in BiPd. Error bars represent the experimental uncertainties (s.d.) in determining the spin polarization. Spin-resolved measurements were carried out with photon energy of 25 eV and temperature of 20 K at Beamline-9B of the Hiroshima Synchrotron Radiation Center (HiSOR), Hiroshima, Japan.
