- Rashba and other spin-orbit interactions - Princeton University.
- PDF Origin of strong Rashba spin orbit coupling and spin-Hall effect in Si.
- (PDF) Rashba Spin-Orbit Coupling Enhanced Carrier Lifetime in.
- Effect of the Rashba spin-orbit coupling on spin transport.
- Origin of Rashba Spin-Orbit Coupling in 2D and 3D Lead Iodide.
- (PDF) Effects of Rashba spin orbit coupling on the conductance of.
- PDF Influence of Rashba spin-orbit coupling on the Kondo effect.
- Rashba effect - Wikipedia.
- (PDF) Effect of Rashba spin-orbit and Rabi couplings on the.
- Double version of the Rashba and Dresselhaus spin-orbit coupling.
- PDF Rashba Spin Orbit Coupling Enhanced Carrier Lifetime in NH PbI.
- New perspectives for Rashba spin–orbit coupling - Nature.
- (PDF) Double version of the Rashba and Dresselhaus spin-orbit.
- Improved effective equation for the Rashba spin-orbit coupling in.
Rashba and other spin-orbit interactions - Princeton University.
Of the electron spin transistor have also been suggested [6,7]. An important ingredient of the DDT is the spin-orbit coupling of the Rashba [8-10] or Dresselhaus [11,12] types. This Rashba-Dresselhaus (RD) coupling scheme is described by a vector potential which can be made proportional to the spin-1/2 operator of a particle within a plane. The Rashba effect, also called Bychkov-Rashba effect, is a momentum-dependent splitting of spin bands in bulk crystals and low-dimensional condensed matter systems (such as heterostructures and surface states) similar to the splitting of particles and anti-particles in the Dirac Hamiltonian. The splitting is a combined effect of spin-orbit interaction and asymmetry of the crystal potential. K×n≡ Rashba field k B R n Current induces steady Rashba field M y=µ B B y R= 2α g k x= 2αeEτ g Impurities are only necessary to maintain steady state M (but forgetting about them leads to incorrect results--”universal spin-Hall conductivity” Murakami et al. Science 301, 1348 (2003) Sinova et al. Phys. Rev. Lett. 92, 126603 (2004).
PDF Origin of strong Rashba spin orbit coupling and spin-Hall effect in Si.
This Review discusses relevant recent and ongoing realizations of Rashba physics in condensed matter, ranging from layered graphene-like materials to cold atoms. In 1984, Bychkov and Rashba introduced a simple form of spin-orbit coupling to explain the peculiarities of electron spin resonance in two-dimensional semiconductors. Over the past 30 years, Rashba spin-orbit coupling has inspired a. The Rashba-Edelstein effect (REE), which characterizes the generation of a transverse spin polarization at interfaces with a longitudinal external electrical field, provides new opportunities to the efficient spin current generation and the manipulation of spin orbit torques (SOTs) in magnetic hetero-structures. Here in this work, we report an exceptionally large interfacial charge-to-spin. We see that the empirical formula works very well in the small kz 075304-4 PHYSICAL REVIEW B 74, 075304 共2006兲 RASHBA SPIN-ORBIT COUPLING IN InSb¼ FIG. 2. Spin-orbit splitting energies of InSb nanowires with a radius of 8 nm in the presence of electric field along x direction with strength of 7.44⫻ 107 V / m as functions of kz.
(PDF) Rashba Spin-Orbit Coupling Enhanced Carrier Lifetime in.
The width nonlinearly increases with increasing current density. Clearly, the spin dynamics in 2D and 3D materials follow the same mechanism. ( a) Magneto-conductance (MC), and ( b) magneto. For the linear Rashba SO coupling of the semiconductor conduction band can reproduce the behavior of more sophisticated eight-band k ·p model calculations. This is achieved by adjusting a single effective parameter that depends on the nanowire crystal structure and its chemical composition. We further compare our results to the.
Effect of the Rashba spin-orbit coupling on spin transport.
Rashba type spin-orbit interaction He m=1 m=2 He •Penetration into He •Excited p-state •Different parameters of quantized state in s and p-state •E g=50 eV , s= 2.7x108 cm/s •m –free electron mass 42 [ ] m ms p eE Hso Order of magnitude stronger than relativistic spin-orbit term. T 1 = 1s ( =100ns) Lateral confinement. An electron of a given spin in momentum space, while shifting the orthogonal spin in the opposite direction. In the 1990s, the Rashba effect was suggested as a tool for manipulating the spin of electrons in spintronics [10], and realized a few years later in a semiconductor heterostructure, where the spin-orbit interaction was controlled by a.
Origin of Rashba Spin-Orbit Coupling in 2D and 3D Lead Iodide.
.
(PDF) Effects of Rashba spin orbit coupling on the conductance of.
Manipulating the electron spin with the aid of spin-orbit coupling (SOC) is an indispensable element of spintronics. Electrostatically gating a material with strong SOC results in an effective magnetic field which can in turn be used to govern the electron spin. In this work, we report the existence and electrostatic tunability of Rashba SOC in multilayer InSe. PHYSICAL REVIEW B 90, 165136 (2014) Rashba spin-orbit coupling in the Kane-Mele-Hubbard model Manuel Laubach,1 Johannes Reuther,2 Ronny Thomale,1 and Stephan Rachel3 1Institute for Theoretical Physics, University of Wurzburg, 97074 W¨ ¨urzburg, Germany 2Department of Physics, California Institute of Technology, Pasadena, California 91125, USA 3Institute for Theoretical Physics, Technische. Effectively work on the Rashba spin-orbit coupling. Benefiting from a large piezoelectric charges at the interface when a vertical strain is applied, a high concentration of two-dimensional electron gas is induced in the plane of heterostructure, which can tune the built-in electric field at the interface and further manipulate the Rashba SOC.
PDF Influence of Rashba spin-orbit coupling on the Kondo effect.
Spin-orbit coupling goes global Emmanuel I. Rashba Harvard University, Cambridge, MA USA Editor's note. This Viewpoint relates to an article by Bychkov and Rashba (1984 J. Phys. C: Solid State 17 6039) and was published as part of a series of Viewpoints celebrating 50 of the most influential papers published. Abstract. We describe a new class of atom-laser coupling schemes which lead to spin-orbit-coupled Hamiltonians for ultracold neutral atoms. By properly setting the optical phases, a pair of. We use k ·p theory to estimate the Rashba spin-orbit coupling (SOC) in large semiconductor nanowires. We specifically investigate GaAs- and InSb-based devices with different gate configurations to control symmetry and localization of the electron charge density. We explore gate-controlled SOC for wires of different size and doping,.
Rashba effect - Wikipedia.
The Rashba and Dresselhaus types of spin-orbit coupling are two typical linear coupling forms. We establish the fundamental physics of a model which can be viewed as the double version of the. We report a theoretical study of the spin and valley dependent transport properties in a WSe 2 superlattice with external Rashba spin-orbit interaction (ERSOI). It is shown that the conductance with and without spin flip strongly depends on the ERSOI and has an oscillatory behavior with respect to ERSOI strength, thus WSe 2 superlattice can act as a spin-converter.
(PDF) Effect of Rashba spin-orbit and Rabi couplings on the.
Rashba spin-orbit coupling in Si, which can lay the foundation of Si spintronics. Using comprehensive magneto-electro-thermal characterization, we report giant Rashba spin orbit coupling at Si interfaces. We observe strong spin-Hall magnetoresistance (SMR) in Ni 80 Fe 20 /MgO/p-Si thin films. Rashba SOC mediated spin accumulation leads to phase.
Double version of the Rashba and Dresselhaus spin-orbit coupling.
Lar and spin-orbit (SO) coupled BECs, etc. [4–14]. In this paper we investigate the effect of the Rabi and Rash ba spin-orbit coupling on the dynamical stability of the bi- nary BEC system. In BECs,. Based on the transfer-matrix method and the group velocity concept, we investigate theoretically the spin tunneling time through single and double barriers of diluted magnetic semiconductor structures in the presence of the Rashba spin−orbit coupling (RSOC) effect. The calculation of transmission probability is based on an effective mass quantum-mechanical approach in the presence of an. Idea of manipulating spin states to create new, spin-based electronic devices [1,2]. Rashba spin-orbit (SO) coupling [3] has been proposed as a mechanism for spin control, not only because of the possibility of its external manipulation, but also because it is the physical origin of spin-dependent phenomena such as anisotropic magnetoresistance.
PDF Rashba Spin Orbit Coupling Enhanced Carrier Lifetime in NH PbI.
While these aspects of organometal halide perovskites have attracted the most attention, the consequences of the Rashba effect, driven by strong spin-orbit coupling, on the photovoltaic properties. Spin currents. Another well-known approach to creating a spin cur-rent emerges when an SO-dependent scattering potential interacts with electrons. This scattering potential can be caused by a strong electric field [6]. The effective spin-orbit coupling generated is called the Rashba spin-orbit (RSO) interaction. Recent experiments predict that.
New perspectives for Rashba spin–orbit coupling - Nature.
Degrees of freedom, forming an effective spin-orbit coupling (SOC). A variety of novel phenomena has been predicted for such systems, for example, the stripe phase and vortex structure in the ground states of spin-orbit-coupled Bose-Einstein condensates (BECs) [15-26], the Rashba pairing bound states (Rashbons) [27,28] and topological. Lifetime in a generic 3D Rashba material. The strong spin−orbit coupling effect from heavy elements (e.g., Pb, Sn, I, and Br) and inversion symmetry breaking owing to the polar distortion (e.g., aligned molecular dipoles in OMHPs) give rise to the Rashba effect, which lifts the two-fold degeneracy of bands near the band gap.
(PDF) Double version of the Rashba and Dresselhaus spin-orbit.
Understanding spin-orbit coupling: spherical potential spin of the electron creates electron’s magnetic moment (in SI) S= e m S = e m h 2 ˙= b˙= 2 B ~ S where B=e~ 2mis Bohr magneton. orbital moment (around atomic core) creates magnetic moment too L= e 2m L = B ~ L = Bl (or can be understood as creating magnetic eld H. The combination of strong spin orbit coupling and strong correlations holds tremendous potential for interesting physical phenomena as well as applications in spintronics and quantum computation. In this context, we here study the interplay between the Rashba spin-orbit coupling (RSOC) and the Kondo screening in noncentrosymmetric f -electron materials. We show that the Kondo coupling of the f. The Rashba and Dresselhaus types of spin-orbit coupling are two typical linear coupling forms. We establish the fundamental physics of a model which can be viewed as the double version of the Rashba and Dresselhaus spin-orbit coupling. This model describes the low energy physics of a class of massless Dirac fermions in spin-orbit systems. The physical properties of the massless Dirac fermions.
Other links: