We demonstrate a large enhancement of the spin accumulation in monolayer graphene following electron-beam induced deposition of an amorphous carbon layer at the ferromagnet-graphene interface. The enhancement is 104-fold when graphene is deposited onto poly(methyl metacrylate) (PMMA) and exposed with sufficient electron-beam dose to cross-link the PMMA, and 103-fold when graphene is deposited directly onto SiO2 and exposed with identical dose. We attribute the difference to a more efficient carbon deposition in the former case due to an increase in the presence of compounds containing carbon, which are released by the PMMA. The amorphous carbon interface can sustain very large current densities without degrading, which leads to very large spin accumulations exceeding 500 μeV at room temperature.
Skip Nav Destination
Article navigation
9 September 2013
Research Article|
September 09 2013
Enhanced spin accumulation at room temperature in graphene spin valves with amorphous carbon interfacial layers
I. Neumann;
I. Neumann
1
ICN2 - Institut Catala de Nanociencia i Nanotecnologia
, Campus UAB, Bellaterra, 08193 Barcelona, Spain
2
Universitat Autonóma de Barcelona
, Bellaterra, 08193 Barcelona, Spain
Search for other works by this author on:
M. V. Costache;
M. V. Costache
1
ICN2 - Institut Catala de Nanociencia i Nanotecnologia
, Campus UAB, Bellaterra, 08193 Barcelona, Spain
Search for other works by this author on:
G. Bridoux;
G. Bridoux
1
ICN2 - Institut Catala de Nanociencia i Nanotecnologia
, Campus UAB, Bellaterra, 08193 Barcelona, Spain
Search for other works by this author on:
J. F. Sierra;
J. F. Sierra
1
ICN2 - Institut Catala de Nanociencia i Nanotecnologia
, Campus UAB, Bellaterra, 08193 Barcelona, Spain
Search for other works by this author on:
S. O. Valenzuela
S. O. Valenzuela
1
ICN2 - Institut Catala de Nanociencia i Nanotecnologia
, Campus UAB, Bellaterra, 08193 Barcelona, Spain
2
Universitat Autonóma de Barcelona
, Bellaterra, 08193 Barcelona, Spain
3
ICREA - Institució Catalana de Recerca i Estudis Avançats
, 08010 Barcelona, Spain
Search for other works by this author on:
Appl. Phys. Lett. 103, 112401 (2013)
Article history
Received:
August 07 2013
Accepted:
August 21 2013
Citation
I. Neumann, M. V. Costache, G. Bridoux, J. F. Sierra, S. O. Valenzuela; Enhanced spin accumulation at room temperature in graphene spin valves with amorphous carbon interfacial layers. Appl. Phys. Lett. 9 September 2013; 103 (11): 112401. https://doi.org/10.1063/1.4820586
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Era of entropy: Synthesis, structure, properties, and applications of high-entropy materials
Christina M. Rost, Alessandro R. Mazza, et al.
Piezoelectric phononic integrated circuits
Krishna C. Balram
Related Content
Room temperature spin Kondo effect and intermixing in Co/Cu non-local spin valves
Appl. Phys. Lett. (June 2017)
Controlling of the surface energy of the gate dielectric in organic field-effect transistors by polymer blend
Appl. Phys. Lett. (March 2009)
Electrical spin transport in cylindrical silicon nanowires with CoFeB/MgO contacts
Appl. Phys. Lett. (August 2017)
Investigation of spin-dependent transports and microstructure in NiMnSb-based magnetoresistive devices
Appl. Phys. Lett. (November 2017)
Determination of effective attenuation length of slow electrons in polymer films
J. Appl. Phys. (June 2020)