Magnetotransport and spin dynamics in an electron gas formed at oxide interfaces

Jia, Chenglong; Berakdar, J.

doi:10.1103/physrevb.83.045309

Cited by 12 publications

(17 citation statements)

References 44 publications

(41 reference statements)

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“…Our theory of Rashba interactions in t 2g 2DESs is consistent with experimental evidence for strong spin-orbit interactions at interfaces between polar and non-polar perovskites [18][19][20] , for example the SrTiO 3 /LaAlO 3 interface, and in surface 2DESs induced by the very strong electric fields applied by ionic liquid gates. It also suggests that Rashba interactions will tend to be stronger in materials which are more easily polarized.…”

supporting

confidence: 86%

Theory oft2gelectron-gas Rashba interactions

2013

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supporting

confidence: 86%

Theory oft2gelectron-gas Rashba interactions

2013

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“…A high-mobility electronic region is achieved by acceptor-doping in graphene. Meanwhile, theoretical calculations have proven that multiferroic oxides can be utilized to generate 2DEG at the surface, which provides a good platform to conduct research on spin interaction and spin field effect devices [69][70][71].…”

Section: D Semiconductors/strongly Correlated Oxide Heterostructuresmentioning

confidence: 99%

Interfacing 2D Semiconductors with Functional Oxides: Fundamentals, Properties, and Applications

2017

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Two-dimensional semiconductors, such as transition-metal dichalcogenides (TMDs) and black phosphorous (BP), have found various potential applications in electronic and opto-electronic devices. However, several problems including low carrier mobility and low photoluminescence efficiencies still limit the performance of these devices. Interfacing 2D semiconductors with functional oxides provides a way to address the problems by overcoming the intrinsic limitations of 2D semiconductors and offering them multiple functionalities with various mechanisms. In this review, we first focus on the physical effects of various types of functional oxides on 2D semiconductors, mostly on MoS 2 and BP as they are the intensively studied 2D semiconductors. Insulating, semiconducting, conventional piezoelectric, strongly correlated, and magnetic oxides are discussed. Then we introduce the applications of these 2D semiconductors/functional oxides systems in field-effect devices, nonvolatile memory, and photosensing. Finally, we discuss the perspectives and challenges within this research field. Our review provides a comprehensive understanding of 2D semiconductors/functional oxide heterostructures, and could inspire novel ideas in interface engineering to improve the performance of 2D semiconductor devices.

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“…Spirals, as well as other magnetic orders that may be present at oxide heterostructures, such as skyrmions, have been studied but within effective, spinonly, models [20]. In most of this previous work, infinite two-dimensional systems were considered and a parabolic band was assumed [16,17,21].…”

Section: Introductionmentioning

confidence: 99%

Transport properties of Rashba conducting strips coupled to magnetic moments with spiral order

Riera

2018

Phys. Rev. B

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Magnetic and transport properties of a conducting layer with Rashba spin-orbit coupling (RSOC) magnetically coupled to a layer of localized magnetic moments are studied on strips of varying width. The localized moments are free to rotate and they acquire an order that results from the competition between the magnetic exchange energy and the kinetic energy of the conduction electrons. By minimizing the total Hamiltonian within the manifold of variational spiral orders of the magnetic moments, the phase diagram in the space of the interlayer exchange J sd , and the ratio of the Rashba coupling to the hopping integral, λ/t was determined. Two main phases with longitudinal spiral order were found, one at large interlayer coupling J sd with uniform order in the transversal direction, and the other at small J sd showing a transversal staggered order. This staggered spiral order is unstable against an antiferromagnetic (AFM) for large values of λ/t. In both spiral phases, the longitudinal spiral momentum that departs from the expected linear dependence with the RSOC for large values of λ/t. Then, various transport properties, including the longitudinal Drude weight and the spin Hall conductivity, inside these two phases are computed in linear response, and their behavior is compared with the ones for the more well-studied cases of a fixed ferromagnetic (FM) and AFM localized magnetic orders.

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Magnetotransport and spin dynamics in an electron gas formed at oxide interfaces

Cited by 12 publications

References 44 publications

Theory oft2gelectron-gas Rashba interactions

Theory oft2gelectron-gas Rashba interactions

Interfacing 2D Semiconductors with Functional Oxides: Fundamentals, Properties, and Applications

Transport properties of Rashba conducting strips coupled to magnetic moments with spiral order

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