Electron spin orientation dependence on momentum in pseudo gap phase of Bi2212

TL;DR

This paper investigates how electron spin orientation varies with momentum in the pseudo-gap phase of Bi2212, highlighting the tunability of spin textures via electric fields due to Rashba spin-orbit coupling.

Contribution

It demonstrates the momentum-dependent spin texture in Bi2212's pseudo-gap phase and shows its tunability through electric fields, advancing understanding of spin manipulation in cuprate superconductors.

Findings

Spin texture in k-space is tunable by electric field.

Dependence of spin orientation on momentum confirmed.

Synthetic spin-orbit coupling linked to broken time-reversal symmetry.

Abstract

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.