Physical Limits of the ballistic and non-ballistic Spin-Field-Effect Transistor: Spin Dynamics in Remote Doped Structures
arXiv:cond-mat/0509611 · doi:10.1103/PhysRevB.72.075318
Abstract
We investigate the spin dynamics and relaxation in remotely-doped two dimensional electron systems where the dopants lead to random fluctuations of the Rashba spin-orbit coupling. Due to the resulting random spin precession, the spin relaxation time is limited by the strength and spatial scale of the random contribution to the spin-orbit coupling. We concentrate on the role of the randomness for two systems where the direction of the spin-orbit field does not depend on the electron momentum: the spin field-effect transistor with balanced Rashba and Dresselhaus couplings and the (011) quantum well. Both of these systems are considered as promising for the spintronics applications because of the suppression of the Dyakonov-Perel' mechanism there makes the realization of a spin field effect transistor in the diffusive regime possible. We demonstrate that the spin relaxation through the randomness of spin-orbit coupling imposes important physical limitations on the operational properties of these devices.
arXiv comment10 pages, 4 figures
References in corpus (11)
- Spintronics: Fundamentals and applications
- Non-ballistic spin field-effect transistor
- Gate-Controlled Spin-Orbit Quantum Interference Effects in Lateral Transport
- Weak Antilocalization and Spin Precession in Quantum Wells
- Giant Spin Relaxation Anisotropy in Zinc-Blende Heterostructures
- Anomalous Spin Dephasing in (110) GaAs Quantum Wells: Anisotropy and Intersubband Effects
- High temperature gate control of quantum well spin memory
- Waveguide diffusion modes and slowdown of D'yakonov-Perel' spin relaxation in narrow 2-D semiconductor channels
- Rashba spin-orbit coupling and spin relaxation in silicon quantum wells
- Highly anisotropic g-factor of two-dimensional hole systems
- Spin Splitting in Symmetrical SiGe Quantum Wells
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- Unified theory of spin-dynamics in a two dimensional electron gases with arbitrary spin-orbit coping strength at finite temperature
- Spin relaxation in quantum dots with random spin-orbit coupling
- Spin-orbit interaction and spin relaxation in a two-dimensional electron gas
- Nonuniform Rashba-Dresselhaus spin precession along arbitrary paths
- Spin-Hall Effect in A Symmetric Quantum Wells by A Random Rashba Field
- Interplay between resonant tunneling and spin precession oscillations in all-electric all-semiconductor spin transistors
- Seebeck effects in two-dimensional spin transistors
- Modeling of diffusion of injected electron spins in spin-orbit coupled microchannels