Unusual thermopower of inhomogeneous graphene grown by chemical vapor deposition
In: Applied Physics Letters, Jg. 104 (2014), Heft 2, S. 021902-21902
Online
unknown
Zugriff:
We report on thermopower (TEP) and resistance measurements of inhomogeneous graphene grown by chemical vapor deposition (CVD). Unlike the conventional resistance of pristine graphene, the gate-dependent TEP shows a large electron-hole asymmetry. This can be accounted for by inhomogeneity of the CVD-graphene where individual graphene regions contribute with different TEPs. At the high magnetic field and low temperature, the TEP has large fluctuations near the Dirac point associated with the disorder in the CVD-graphene. TEP measurements reveal additional characteristics of CVD-graphene, which are difficult to obtain from the measurement of resistance alone.
| Titel: |
Unusual thermopower of inhomogeneous graphene grown by chemical vapor deposition
|
|---|---|
| Autor/in / Beteiligte Person: | Nam, Youngwoo ; Sun, Jie ; Lindvall, Niclas ; Yang, Seung Jae ; Park, Chong Rae ; Park, Yung ; Woo ; Yurgens, Avgust |
| Link: | |
| Zeitschrift: | Applied Physics Letters, Jg. 104 (2014), Heft 2, S. 021902-21902 |
| Veröffentlichung: | 2014 |
| Medientyp: | unknown |
| ISSN: | 0003-6951 (print) ; 1077-3118 (print) |
| DOI: | 10.1063/1.4861745 |
| Schlagwort: |
|
| Sonstiges: |
|