Next Article in Journal
Materials and Breakdown Phenomena: Heterogeneous Molybdenum Metallic Films
Next Article in Special Issue
Goldstone and Higgs Hydrodynamics in the BCS–BEC Crossover
Previous Article in Journal
Contrasting Phenomenology of NMR Shifts in Cuprate Superconductors
Open AccessArticle

Inverse Spin Galvanic Effect in the Presence of Impurity Spin-Orbit Scattering: A Diagrammatic Approach

Dipartimento di Matematica e Fisica, Università Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Andrea Perali and Alessandro Ricci
Condens. Matter 2017, 2(2), 17; https://doi.org/10.3390/condmat2020017
Received: 31 March 2017 / Revised: 2 May 2017 / Accepted: 2 May 2017 / Published: 11 May 2017
Spin-charge interconversion is currently the focus of intensive experimental and theoretical research both for its intrinsic interest and for its potential exploitation in the realization of new spintronic functionalities. Spin-orbit coupling is one of the key microscopic mechanisms to couple charge currents and spin polarizations. The Rashba spin-orbit coupling in a two-dimensional electron gas has been shown to give rise to the inverse spin galvanic effect, i.e., the generation of a non-equilibrium spin polarization by a charge current. Whereas the Rashba model may be applied to the interpretation of experimental results in many cases, in general, in a given real physical system, spin-orbit coupling also occurs due to other mechanisms such as Dresselhaus bulk inversion asymmetry and scattering from impurities. In this work, we consider the inverse spin galvanic effect in the presence of Rashba, Dresselhaus and impurity spin-orbit scattering. We find that the size and form of the inverse spin galvanic effect is greatly modified by the presence of the various sources of spin-orbit coupling. Indeed, spin-orbit coupling affects the spin relaxation time by adding the Elliott–Yafet mechanism to the Dyakonov–Perel, and, furthermore, it changes the non-equilibrium value of the current-induced spin polarization by introducing a new spin generation torque. We use a diagrammatic Kubo formula approach to evaluate the spin polarization-charge current response function. We finally comment about the relevance of our results for the interpretation of experimental results. View Full-Text
Keywords: spin-orbit coupling; spin transport; 2DEG; spin torque spin-orbit coupling; spin transport; 2DEG; spin torque
Show Figures

Figure 1

MDPI and ACS Style

Maleki Sheikhabadi, A.; Raimondi, R. Inverse Spin Galvanic Effect in the Presence of Impurity Spin-Orbit Scattering: A Diagrammatic Approach. Condens. Matter 2017, 2, 17. https://doi.org/10.3390/condmat2020017

AMA Style

Maleki Sheikhabadi A, Raimondi R. Inverse Spin Galvanic Effect in the Presence of Impurity Spin-Orbit Scattering: A Diagrammatic Approach. Condensed Matter. 2017; 2(2):17. https://doi.org/10.3390/condmat2020017

Chicago/Turabian Style

Maleki Sheikhabadi, Amin; Raimondi, Roberto. 2017. "Inverse Spin Galvanic Effect in the Presence of Impurity Spin-Orbit Scattering: A Diagrammatic Approach" Condens. Matter 2, no. 2: 17. https://doi.org/10.3390/condmat2020017

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop