New directions in spintronics

Marrows, C. H.; Hickey, B. J.

doi:10.1098/rsta.2011.0156

Cited by 34 publications

(17 citation statements)

References 66 publications

(79 reference statements)

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“…S pintronics has been successful in the development of magnetic recording and high density magnetic memory devices 1,2 . The next frontier of exploration in this field is the demonstration of gate tunable control of spin currents for spinbased transistor and spin transfer torque based memory applications 3 .…”

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confidence: 99%

Giant spin Hall effect in graphene grown by chemical vapour deposition

et al. 2014

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Advances in large-area graphene synthesis via chemical vapour deposition on metals like copper were instrumental in the demonstration of graphene-based novel, wafer-scale electronic circuits and proof-of-concept applications such as flexible touch panels. Here, we show that graphene grown by chemical vapour deposition on copper is equally promising for spintronics applications. In contrast to natural graphene, our experiments demonstrate that chemically synthesized graphene has a strong spin-orbit coupling as high as 20 meV giving rise to a giant spin Hall effect. The exceptionally large spin Hall angle B0.2 provides an important step towards graphene-based spintronics devices within existing complementary metal-oxide-semiconductor technology. Our microscopic model shows that unavoidable residual copper adatom clusters act as local spin-orbit scatterers and, in the resonant scattering limit, induce transverse spin currents with enhanced skew-scattering contribution. Our findings are confirmed independently by introducing metallic adatoms-copper, silver and gold on exfoliated graphene samples.

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confidence: 99%

Giant spin Hall effect in graphene grown by chemical vapour deposition

et al. 2014

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“…2 For spin-transfer torque magnetic random access memory (STT-MRAM) and magnonic devices, low damping facilitates a lower writing current and longer propagation of spin waves; higher damping is desirable for increasing the reversal rates and the coherent reversal of magnetic elements, as damping suppresses the precessional motion of the magnetization vector. In general, the control of magnetic properties at the micro-and nano-scale is important for technological applications.…”

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confidence: 99%

Local control of magnetic damping in ferromagnetic/non-magnetic bilayers by interfacial intermixing induced by focused ion-beam irradiation

King

Ganguly

Burn

et al. 2014

Applied Physics Letters

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“…The magnetism of one-dimensional (1D) systems is not only fascinating from a fundamental perspective but also very promising for technological applications such as recording media, memory devices, and spintronics. 1,2 Consequently, the experimental and theoretical research activities in this field have been most intense over the past years. [2][3][4] One of the properties of central importance in these materials is the magnetic anisotropy energy (MAE) which defines the low-energy orientation of the magnetization M (easy axis) as well as the stability of M with respect to external fields, electric currents, and temperature-induced fluctuations.…”

Section: Introductionmentioning

confidence: 99%

Alloying route to tailor giant magnetic anisotropy in transition-metal nanowires

et al. 2013

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First-principles theoretical investigations of one-dimensional ordered 3d-5d alloys reveal magnetic anisotropy energies E, which are extraordinary high for transition-metal nanostructures. The results show that E of Pt-X and Ir-X wires with X ≡ Ti-Ni strongly oscillates as a function 3d-band filling showing both giant values (e.g., E = 25, 58, and 57 meV/atom for Pt-Ni, Ir-Cr, and Ir-Ni) as well as modest enhancements (e.g., E = 2.3 and 6.5 meV/atom for Pt-Cr and Pt-Fe). The robustness of the results with respect to strain and relaxation is demonstrated. The microscopic mechanisms behind the trends in E are analyzed from a local perspective.

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New directions in spintronics

Cited by 34 publications

References 66 publications

Giant spin Hall effect in graphene grown by chemical vapour deposition

Giant spin Hall effect in graphene grown by chemical vapour deposition

Local control of magnetic damping in ferromagnetic/non-magnetic bilayers by interfacial intermixing induced by focused ion-beam irradiation

Alloying route to tailor giant magnetic anisotropy in transition-metal nanowires

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