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Long distance spin communication in chemical vapour deposited graphene

Venkata Kamalakar Mutta (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Christiaan Groenveld (Institutionen för mikroteknologi och nanovetenskap) ; André Dankert (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Saroj Prasad Dash (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
Nature Communications (2041-1723). Vol. 6 (2015), p. 6766.
[Artikel, refereegranskad vetenskaplig]

Graphene is an ideal medium for long-distance spin communication in future spintronic technologies. So far, the prospect is limited by the smaller sizes of exfoliated graphene flakes and lower spin transport properties of large-area chemical vapour-deposited (CVD) graphene. Here we demonstrate a high spintronic performance in CVD graphene on SiO2/Si substrate at room temperature. We show pure spin transport and precession over long channel lengths extending up to 16 μm with a spin lifetime of 1.2 ns and a spin diffusion length ~6 μm at room temperature. These spin parameters are up to six times higher than previous reports and highest at room temperature for any form of pristine graphene on industrial standard SiO2/Si substrates. Our detailed investigation reinforces the observed performance in CVD graphene over wafer scale and opens up new prospects for the development of lateral spin-based memory and logic applications.

Nyckelord: spintronics, graphene, CVD, spin transport, room temperature



Denna post skapades 2015-04-10. Senast ändrad 2016-08-22.
CPL Pubid: 215074

 

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