OICC Press Journal of Theoretical and Applied Physics 2251-7235 17 1 2023 11 17 Electron spin orientation dependence on momentum in pseudo gap phase of Bi2212 10.57647/j.jtap.2023.1701.05 EN Udai Prakash Tyagi Deshbandhu College, University of Delhi, Kalkaji, New Delhi-110019, India 0000-0003-1944-7526 Partha Sarathi Goswami Deshbandhu College, University of Delhi, Kalkaji, New Delhi-110019, India 0000-0002-3835-5929 Journal Article 2023 11 17 The aim of the paper is to study the electron spin direction dependence on momentum due to the presence of Rashba spin-orbit coupling in the pseudo-gap phase of Bi2212 bilayer. The non-trivial spin texture in k space is found tuneable by electric field. The dependence is reported earlier by a group of workers in a spin and angle-resolved photoemission spectroscopic measurement. The synthetic spin-orbit coupling, characterized by the broken time-reversal symmetry, is expected to be useful for the manipulation of the spin orientation.