spin dynamics, Rashba systems, wave packets
We explore spin dynamics for localized wave packets in Rashba systems using spin quantum propagators. We derive exact (one-dimensional) and approximate (two-dimensional) analytic expressions for the propagators and apply them to Gaussian wave packets to obtain localized solutions of systems manifesting Rashba interactions. We observe and describe the evolution of the wave packets. We identify characteristic structures in the wave-packet evolution and look for features with specific spintronics applications such as spin separation and spin accumulation. We discuss the relative importance of those features as a function of the Rashba coupling strength α and the width of the wave packet w. In particular, we find a trade off between spatial oscillation and global separation of the spin when varying α and w.
Original Publication Citation
Hsu, B. C., & Van Huele, J. F. S. (2009). Spin dynamics for wave packets in Rashba systems. Physical Review B, 80(23), 235309.
BYU ScholarsArchive Citation
Hsu, Bailey C. and Van Huele, Jean F., "Spin Dynamics for Wave Packets in Rashba Systems" (2009). Faculty Publications. 1853.
American Physical Society
Physical and Mathematical Sciences
Physics and Astronomy
© 2009 American Physical Society. This article is the Version of Record published by the American Physical Society in Physical Review B in 2009, available online at https://doi.org/10.1103/PhysRevB.80.235309
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