Spin transport and precession in graphene measured by nonlocal and three-terminal methods
Artikel i vetenskaplig tidskrift, 2014

We investigate the spin transport and precession in graphene by using the Hanle effect in nonlocal and three-terminal measurement geometries. Identical spin lifetimes, spin diffusion lengths, and spin polarizations are observed in graphene devices for both techniques over a wide range of temperatures. The magnitude of the spin signals is well explained by spin transport models. These observations rules out any signal enhancements or additional scattering mechanisms at the interfaces for both geometries. This validates the applicability of both the measurement methods for graphene based spintronics devices and their reliable extractions of spin parameters.

Författare

André Dankert

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Venkata Kamalakar Mutta

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Saroj Prasad Dash

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Johan Bergsten

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 104 192403 - 192403

Styrkeområden

Nanovetenskap och nanoteknik

Materialvetenskap

Ämneskategorier

Fysik

Nanoteknik

DOI

10.1063/1.4876060