Intrinsic contribution to spin Hall and spin Nernst effects in a bilayer graphene

Dyrdał, A.; Barnaś, J.

doi:10.1088/0953-8984/24/27/275302

Cited by 16 publications

(9 citation statements)

References 46 publications

(84 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[92] Since the effect was not only observed in metals, but later in magnetic insulators and semiconductors, [5,93] it became finally clear that the phenomenon is caused by magnons. [94,95] The main focus of this article is related to the spin Nernst effect (SNE) [96,81,97,53,98,99,100,54,84,85], which is the thermal analog to the intensively studied spin Hall effect (SHE) [101,102,103]. The fingerprint of both phenomena is a transverse spin current or spin accumulation.…”

Section: Introductionmentioning

confidence: 99%

Spin caloric transport from density-functional theory

Popescu¹,

Kratzer²,

Entel³

et al. 2018

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Spin caloric transport refers to the coupling of heat with spin transport. Its applications primarily concern the generation of spin currents and control of magnetisation by temperature gradients for information technology, known by the synonym spin caloritronics. Within the framework of ab-initio theory, new tools are being developed to provide an additional understanding of these phenomena in realistic materials, accounting for the complexity of the electronic structure without adjustable parameters. Here we review this progress, summarising the principles of the density-functional-based approaches in the field and presenting a number of application highlights. Our discussion includes the three most frequently employed approaches to the problem, namely the Kubo, Boltzmann, and Landauer-Büttiker methods. These are showcased in specific examples that span, on the one hand, a wide range of materials, such as bulk metallic alloys, nano-structured metallic and tunnel junctions, or magnetic overlayers on heavy metals, and, on the other hand, a wide range of effects, such as the spin-Seebeck, magneto-Seebeck, and spin-Nernst effects, spin disorder, and the thermal spin-transfer and thermal spin-orbit torques.

show abstract

Section: Introductionmentioning

confidence: 99%

Spin caloric transport from density-functional theory

Popescu¹,

Kratzer²,

Entel³

et al. 2018

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…Perpendicular electric field effects have been studied, both in graphene bilayers [8,9] as well as in graphene-like buckled systems [10][11][12] but, to our best knowledge, not for the GLNRs with in-plane edge magnetic moments. Figure 2 shows that perpendicular staggered voltage V suppresses edge magnetic moments quite strongly.…”

Section: Resultsmentioning

confidence: 99%

In-Plane Edge Magnetism in Graphene-Like Nanoribbons

Krompiewski

Cuniberti

2017

Acta Phys. Pol. A

View full text Add to dashboard Cite

This paper is devoted to identification of the most important factors responsible for formation of magnetic moments at edges of graphene-like nanoribbons. The main role is attributed to the Hubbard correlations (within unrestricted Hartree-Fock approximation) and intrinsic spin-orbit interactions, but additionally a perpendicular electric field is also taken into account. Of particular interest is the interplay of the in-plane edge magnetism and the energy band gap. It is shown that, with the increasing electric field, typically the following phases develop: magnetic insulator (with in-plane spins), nonmagnetic narrow-band semiconductor, and nonmagnetic band insulator.

show abstract

“…The spin Nernst conductivity in the low-temperature regime, however, is not universal and is correlated with the spin Hall conductivity according to Eq. Interestingly, the spin Nernst conductivity tends to zero when jmj ) 2g (Dyrdał and Barnaś, 2012). For instance, the spin Hall and spin Nernst conductivities of graphene due to Rashba spin-orbit interactions are shown in Figure 18.7.…”

Section: Spin Nernst Effectmentioning

confidence: 99%

“…The spin Nernst effect was studied theoretically (Lie and Xie, 2010;Tauber et al, 2012;Rothe et al, 2012;Dyrdał and Barnaś, 2012;Lyapilin, 2013;Borge et al, 2013) mainly in the low-temperature regime. Its behavior depends on the nature of spin-orbit interaction taken into account and is correlated with the zero-temperature spin Hall effect.…”

Section: Spin Nernst Effectmentioning

confidence: 99%