Charge and spin transport in disordered graphene-based materials [electronic resource] : doctoral thesis accepted by Autonomous University of Barcelona, Spain / Dinh Van Tuan.

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Charge and spin transport in disordered graphene-based materials [electronic resource] : doctoral thesis accepted by Autonomous University of Barcelona, Spain / Dinh Van Tuan.

9783319255712 (electronic book)
3319255711 (electronic book)
9783319255699

Cham : Springer, [2016]

©2016

English

1 online resource : illustrations.

10.1007/978-3-319-25571-2 doi

TA418.9.N35

620.1/15

This thesis presents an in-depth theoretical analysis of charge and spin transport properties in complex forms of disordered graphene. It relies on innovative real space computational methods of the time-dependent spreading of electronic wave packets. First a universal scaling law of the elastic mean free path versus the average grain size is predicted for polycrystalline morphologies, and charge mobilities of up to 300.000 cm2/V.s are determined for 1 micron grain size, while amorphous graphene membranes are shown to behave as Anderson insulators. An unprecedented spin relaxation mechanism, unique to graphene and driven by spin/pseudospin entanglement is then reported in the presence of weak spin-orbit interaction (gold ad-atom impurities) together with the prediction of a crossover from a quantum spin Hall Effect to spin Hall effect (for thallium ad-atoms), depending on the degree of surface ad-atom segregation and the resulting island diameter.

Includes bibliographical references.

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Online resource; title from PDF title page (viewed October 28, 2015).

Springer theses.

Print version: 9783319255699

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