Sökning: WFRF:(Lara Avila Samuel 1983) >
Hot carrier relaxat...
Hot carrier relaxation of Dirac fermions in bilayer epitaxial graphene
-
- Huang, J. (författare)
- University Of Oxford
-
- Alexander-Webber, J. A. (författare)
- University Of Oxford
-
- Janssen, Tjbm (författare)
- National Physical Laboratory (NPL)
-
visa fler...
-
- Tzalenchuk, A.Y. (författare)
- National Physical Laboratory (NPL),Royal Holloway University of London
-
- Yager, Thomas, 1987 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Lara Avila, Samuel, 1983 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Kubatkin, Sergey, 1959 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Myers-Ward, R. L. (författare)
- Naval Research Laboratory
-
- Wheeler, V. D. (författare)
- Naval Research Laboratory
-
- Gaskill, D. K. (författare)
- Naval Research Laboratory
-
- Nicholas, R. J. (författare)
- University Of Oxford
-
visa färre...
-
(creator_code:org_t)
- 2015-04-02
- 2015
- Engelska.
-
Ingår i: Journal of Physics Condensed Matter. - : IOP Publishing. - 0953-8984 .- 1361-648X. ; 27:16
- Relaterad länk:
-
http://arxiv.org/pdf...
-
visa fler...
-
https://research.cha...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Energy relaxation of hot Dirac fermions in bilayer epitaxial graphene is experimentally investigated by magnetotransport measurements on Shubnikov-de Haas oscillations and weak localization. The hot-electron energy loss rate is found to follow the predicted Bloch-Gruneisen power-law behaviour of T-4 at carrier temperatures from 1.4K up to similar to 100 K, due to electron-acoustic phonon interactions with a deformation potential coupling constant of 22 eV. A carrier density dependence n(e)(-1.5) in the scaling of the T-4 power law is observed in bilayer graphene, in contrast to the n(e)(-0.5) dependence in monolayer graphene, leading to a crossover in the energy loss rate as a function of carrier density between these two systems. The electron-phonon relaxation time in bilayer graphene is also shown to be strongly carrier density dependent, while it remains constant for a wide range of carrier densities in monolayer graphene. Our results and comparisons between the bilayer and monolayer exhibit a more comprehensive picture of hot carrier dynamics in graphene systems.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- hot carriers
- magnetotransport
- energy loss rate
- bilayer graphene
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Huang, J.
-
Alexander-Webber ...
-
Janssen, Tjbm
-
Tzalenchuk, A.Y.
-
Yager, Thomas, 1 ...
-
Lara Avila, Samu ...
-
visa fler...
-
Kubatkin, Sergey ...
-
Myers-Ward, R. L ...
-
Wheeler, V. D.
-
Gaskill, D. K.
-
Nicholas, R. J.
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
och Den kondenserade ...
- Artiklar i publikationen
-
Journal of Physi ...
- Av lärosätet
-
Chalmers tekniska högskola