Higher-order contributions to Rashba and Dresselhaus effects
نویسندگان
چکیده
منابع مشابه
Measurement of Rashba and Dresselhaus spin–orbit magnetic fields
Spin–orbit coupling is a manifestation of special relativity. In the reference frame of a moving electron, electric fields transform into magnetic fields, which interact with the electron spin and lift the degeneracy of spin-up and spin-down states. In solid-state systems, the resulting spin–orbit fields are referred to as Dresselhaus and Rashba fields, depending on whether the electric fields ...
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Starting with the indirect exchange model influenced by the Rashba and the Dresselhaus spin-orbit interactions, we derive the Dzyaloshinskii-Moriya interaction of localized spins. The strength of the Dzyaloshinskii-Moriya interaction is compared with that of the Heisenberg exchange term as a function of atomic distance. Using the calculated interaction strengths, we discuss the formation of var...
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The spin-Hall effect in the two-dimensional electron gas (2DEG) generates symmetric out-of-plane spin Sz accumulation about the current axis, in the absence of external magnetic field. Here we employ the real space Landauer-Keldysh formalism(1) by considering a four-terminal setup to investigate the circumstances in which this symmetry is broken. For absence of Dresselhaus interaction, starting...
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We calculate the electrically induced spin accumulation in diffusive systems due to both Rashba (with strength α) and Dresselhaus (with strength β) spin-orbit interaction. Using a diffusion equation approach we find that magnetoelectric effects disappear and that there is thus no spin accumulation when both interactions have the same strength, α = ±β. In thermodynamically large systems, the fin...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2006
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.73.205341