A Theoretical Investigation of Relativistic Spintronics

Details A Theoretical Investigation of Relativistic Spintronics A Theoretical Investigation of Relativistic Spintronics

2004-11-27

arxiv.org/abs/cond-mat/0411689v1

Physics

Condensed Matter

Other Condensed Matter

12 pages

Scientific paper

Spintronics directly based on relativistic quantum mechanics is called as relativistic spintronics, which involves the study of active control and manipulation of 4D spin-tensor degrees of freedom via the electromagnetic field tensor. For future potential electronic devices with smaller size, the study of relativistic spintronics would be valuable. In this paper, we try to establish a general theoretical basis for relativistic spintronics, from which we have: 1) in relativistic spintronics, there have more plentiful contents for relativistic effects, e.g. the usual 3D spatial spin-orbit coupling is extended to the 4D spin-orbit-tensor coupling; 2) via the spin and like-spin degrees of freedom we can simultaneously make use of electric and magnetic field strengths to orientate an electron; 3) not only the spin quantum states of a moving electron but also those of a motionless electron can be affected by some particular electrostatic fields.

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