Spin dynamics in two-dimensional quantum materials : a theoretical study / Marc Vila Tusell.

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Spin dynamics in two-dimensional quantum materials : a theoretical study / Marc Vila Tusell.

9783030861148 (electronic bk.)
3030861147 (electronic bk.)
9783030861131 (print)
3030861139

Cham, Switzerland : Springer, [2022]

English

1 online resource (xviii, 160 pages) : illustrations (some color).

10.1007/978-3-030-86114-8 doi

TK7874.887

621.3

This thesis focuses on the exploration of nontrivial spin dynamics in graphene-based devices and topological materials, using realistic theoretical models and state-of-the-art quantum transport methodologies. The main outcomes of this work are: (i) the analysis of the crossover from diffusive to ballistic spin transport regimes in ultraclean graphene nonlocal devices, and (ii) investigation of spin transport and spin dynamics phenomena (such as the (quantum) spin Hall effect) in novel topological materials, such as monolayer Weyl semimetals WeTe2 and MoTe2. Indeed, the ballistic spin transport results are key for further interpretation of ultraclean spintronic devices, and will enable extracting precise values of spin diffusion lengths in diffusive transport and guide experiments in the (quasi)ballistic regime. Furthermore, the thesis provides an in-depth theoretical interpretation of puzzling huge measured efficiencies of the spin Hall effect in MoTe2, as well as a prediction of a novel canted quantum spin Hall effect in WTe2 with spins pointing in the yz plane.

"Doctoral thesis accepted by Universitat Autònoma de Barcelona, Spain."

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Online resource; title from PDF title page (SpringerLink, viewed November 19, 2021).

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