Spintronics directly based on relativistic quantum mechanics is called relativistic spintronics, which involves the study of active control and manipulation of 4D spin-tensor degrees of freedom through the tensor of the electromagnetic field. For potential future smaller electronic devices, the study of relativistic spintronics would be valuable. In this work, we try to establish a general theoretical basis for relativistic spintronics, of which we have: 1) in relativistic spintronics, they have more abundant contents for relativistic effects, Usual spin-orbit space link 3D extends to the 4D orbit-rotation orbit link; 2) through the degrees of freedom of spin and like-spin, we can simultaneously use electric and magnetic field forces to orient an electron; 3) not only the quantum spin states of a moving electron but also those of an immobile electron can be affected by some particular electrostatic fields.
History
Spintronics emerged from the discoveries in the 1980s regarding spin-dependent electron transport phenomena in solid-state devices. This includes observation of the spin-polarised electron injection of a ferromagnetic metal to a normal metal by Johnson and Silsbee (1985) and the discovery of giant magneto resistance independently by Albert Fert et al and Peter Grünberg et al. (1988). The origins of spintronics can be traced to ferromagnet / superconductor tunnel experiments initiated by Meservey and Tedrow and initial experiments on magnetic tunnel junctions by Julliere in the 1970s. The use of semiconductors for spintronics Began with the theoretical proposal of a spin-effect-transistor field by Datta and Das in 1990 [8] and the electric spin dipole resonance by Rashba in 1960.