Effects of different lead magnetizations on the Datta-Das spin field-effect transistor
arXiv:1901.07554 · doi:10.1021/acs.jpcc.9b00847
Abstract
A Datta-Das spin field effect transistor is built of a one-dimensional weak link, with Rashba spin orbit interactions (SOI), which connects two magnetized reservoirs. The particle and spin currents between the two reservoirs are calculated to lowest order in the tunneling through the weak link and in the wide-band approximation, with emphasis on their dependence on the origins of the `bare' magnetizations in the reservoirs. The SOI is found to generate magnetization components in each reservoir, which rotate in the plane of the electric field (generating the SOI) and the weak link, only if the `bare' magnetization of the other reservoir has a non-zero component in that plane. The SOI affects the charge current only if both reservoirs are polarized. The charge current is conserved, but the transverse rotating magnetization current is not conserved since the SOI in the weak link generates extra spin polarizations which are injected into the reservoirs.
arXiv comment7 pages, 1 figure. arXiv admin note: text overlap with arXiv:1804.09936
References in corpus (18)
- Spintronics: Fundamentals and applications
- New Perspectives for Rashba Spin-Orbit Coupling
- Coupling of Spin and Orbital Motion of Electrons in Carbon Nanotubes
- A spin metal-oxide-semiconductor field-effect transistor using half-metallic-ferromagnet contacts for the source and drain
- Large spin-orbit coupling in carbon nanotubes
- Bends In Nanotubes Allow Electric Spin Control and Coupling
- A proof of the Kramers degeneracy of transmission eigenvalues from antisymmetry of the scattering matrix
- Spin relaxation due to deflection coupling in nanotube quantum dots
- Filtering and analyzing mobile qubit information via Rashba-Dresselhaus-Aharonov-Bohm interferometers
- Conductance of Rashba spin-split systems with ferromagnetic contacts
- Spin-orbit interaction in a dual gated InAs/GaSb quantum well
- Spin field-effect transistor action via tunable polarization of the spin injection in a Co/MgO/graphene contact
- Suspended nanowires as mechanically-controlled Rashba spin-splitters
- Gate-controlled anisotropy in Aharonov-Casher spin interference: signatures of Dresselhaus spin-orbit inversion and spin phases
- Mechanically-controlled spin-selective transport
- Spin interferometry in anisotropic spin-orbit fields
- Electric and Magnetic Gating of Rashba-Active Weak Links
- Quantum transport properties in Datta-Das tuned opacity spin-transistors
Cited by in corpus (5)
- Spin selectivity through time-reversal symmetric helical junctions
- DC spin generation by junctions with AC driven spin-orbit interaction
- Effects of magnetic fields on the Datta-Das spin field-effect transistor
- Photovoltaic effect generated by spin-orbit interactions
- Transverse currents in spin transistors