001     865993
005     20210329102509.0
020 _ _ |a 978-3-95806-429-4
024 7 _ |2 Handle
|a 2128/23183
024 7 _ |2 ISSN
|a 1866-1807
037 _ _ |a FZJ-2019-05254
041 _ _ |a English
100 1 _ |0 P:(DE-Juel1)157840
|a Bouaziz, Juba
|b 0
|e Corresponding author
|u fzj
245 _ _ |a Spin-orbitronics at the nanoscale: From analytical models to real materials
|f - 2019-09-09
260 _ _ |a Jülich
|b Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
|c 2019
300 _ _ |a 228 S.
336 7 _ |2 DataCite
|a Output Types/Dissertation
336 7 _ |0 PUB:(DE-HGF)3
|2 PUB:(DE-HGF)
|a Book
|m book
336 7 _ |2 ORCID
|a DISSERTATION
336 7 _ |2 BibTeX
|a PHDTHESIS
336 7 _ |0 2
|2 EndNote
|a Thesis
336 7 _ |0 PUB:(DE-HGF)11
|2 PUB:(DE-HGF)
|a Dissertation / PhD Thesis
|b phd
|m phd
|s 1572507605_28789
336 7 _ |2 DRIVER
|a doctoralThesis
490 0 _ |a Schriften des Forschungszentrums Jülich. Reihe Schlüsseltechnologien / Key Technologies
|v 204
502 _ _ |a RWTH Aachen, Diss., 2019
|b Dr.
|c RWTH Aachen
|d 2019
520 _ _ |a This thesis provides a theoretical description of magnetic nanostructures in inversion-asymmetric environments with strong spin-orbit interaction (SOI). The theoretical concepts introduced here can be applied in the field of spin-orbitronics, which consists ofexploiting the SOI to manipulate the electron spin without external magnetic fields. The investigated systems display a plethora of interesting phenomena ranging from chiral magnetic interactions to gapped magnetic excitations. In practice, we adopt two different approaches: First, a model-based one relying on the Rashba Hamiltonian, which is employed to demystify and understand magnetic and transport properties of magnetic nanostructures embedded in a Rashba electron gas. Second, we use a first-principles approach within the framework of the Korringa-Kohn-Rostoker (KKR) Green function method to investigate the ground state properties of magnetic impurities in topologically insulating hosts. This method is suitable to simulate nanostructures in real space. Then, we employed our newly developed code based on time-dependent density functional theory to compute the spin excitation spectra of these magnetic nanostructures embedded in topological insulators. Moreover, the KKR Green function method was used to simulate the electronic structure and ground state properties of large magnetic nanostructures, namely magnetic Skyrmions. In the first part, the analytical Rashba Green function and the scattering matrices modeling the magnetic impurities in the s-wave approximation are employed for the computation of the magnetic interaction tensor which contains: isotropic exchange, Dzyaloshinskii-Moriya (DM) and pseudo-dipolar interactions. The competition between these interactions leads to a rich phase diagram depending on the distance between the magnetic impurities. Next, we consider an external perturbing electric field and investigate the transport properties by computing the residual resistivity tensor within linear response theory. The contribution of SOI is explored. The investigation of arbitrary orientations of the impurity magnetic moment allowed a detailed analysis of contributions from the anisotropic magnetoresistance and planar Hall effect. Moreover, we calculate the impurity induced bound currents in the Rashba electron gas, which are used to compute the induced orbital magnetization. For a trimer of impurities with a non-vanishing spin chirality (SC) a finite orbital magnetization is observed when SOI is turned off. Since it emerges from the SC, it was named chiral orbital magnetization. [...]
536 _ _ |0 G:(DE-HGF)POF3-142
|a 142 - Controlling Spin-Based Phenomena (POF3-142)
|c POF3-142
|f POF III
|x 0
856 4 _ |u https://juser.fz-juelich.de/record/865993/files/Schluesseltech_204.pdf
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856 4 _ |u https://juser.fz-juelich.de/record/865993/files/Schluesseltech_204.pdf?subformat=pdfa
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910 1 _ |0 I:(DE-588b)5008462-8
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913 1 _ |0 G:(DE-HGF)POF3-142
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|a DE-HGF
|b Energie
|l Future Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT)
|v Controlling Spin-Based Phenomena
|x 0
914 1 _ |y 2019
915 _ _ |0 StatID:(DE-HGF)0510
|2 StatID
|a OpenAccess
915 _ _ |0 LIC:(DE-HGF)CCBY4
|2 HGFVOC
|a Creative Commons Attribution CC BY 4.0
920 _ _ |l yes
920 1 _ |0 I:(DE-Juel1)IAS-1-20090406
|k IAS-1
|l Quanten-Theorie der Materialien
|x 0
920 1 _ |0 I:(DE-Juel1)PGI-1-20110106
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|l Quanten-Theorie der Materialien
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980 1 _ |a FullTexts


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