Details
| Original language | English |
|---|---|
| Pages (from-to) | 699-702 |
| Number of pages | 4 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 42 |
| Issue number | 4 |
| Publication status | Published - 5 Dec 2009 |
Abstract
Single and coupled bilayer graphene exhibit outstanding electronic properties, making them candidates for new electronic devices. Apart from these, bilayer systems consisting of two decoupled monolayers can be produced. We investigate the electronic properties of such a decoupled double layer system formed by the folding of a single one. Electronic transport through these two very closely spaced monolayers is analyzed, varying carrier concentration, magnetic field and temperature from 1.5 up to 50 K. Using the temperature dependence of the Shubnikov-de Haas oscillations observed in the longitudinal resistance, the cyclotron masses for electrons and holes in both layers are obtained for different carrier concentrations. These values are higher than those expected from a single graphene monolayer, confirming a reduced Fermi velocity in such twisted samples.
Keywords
- Decoupled monolayers, Graphene, Shubnikov-de Haas effect
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 42, No. 4, 05.12.2009, p. 699-702.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Temperature dependent measurements on two decoupled graphene monolayers
AU - Schmidt, H.
AU - Lüdtke, T.
AU - Barthold, P.
AU - Haug, R. J.
PY - 2009/12/5
Y1 - 2009/12/5
N2 - Single and coupled bilayer graphene exhibit outstanding electronic properties, making them candidates for new electronic devices. Apart from these, bilayer systems consisting of two decoupled monolayers can be produced. We investigate the electronic properties of such a decoupled double layer system formed by the folding of a single one. Electronic transport through these two very closely spaced monolayers is analyzed, varying carrier concentration, magnetic field and temperature from 1.5 up to 50 K. Using the temperature dependence of the Shubnikov-de Haas oscillations observed in the longitudinal resistance, the cyclotron masses for electrons and holes in both layers are obtained for different carrier concentrations. These values are higher than those expected from a single graphene monolayer, confirming a reduced Fermi velocity in such twisted samples.
AB - Single and coupled bilayer graphene exhibit outstanding electronic properties, making them candidates for new electronic devices. Apart from these, bilayer systems consisting of two decoupled monolayers can be produced. We investigate the electronic properties of such a decoupled double layer system formed by the folding of a single one. Electronic transport through these two very closely spaced monolayers is analyzed, varying carrier concentration, magnetic field and temperature from 1.5 up to 50 K. Using the temperature dependence of the Shubnikov-de Haas oscillations observed in the longitudinal resistance, the cyclotron masses for electrons and holes in both layers are obtained for different carrier concentrations. These values are higher than those expected from a single graphene monolayer, confirming a reduced Fermi velocity in such twisted samples.
KW - Decoupled monolayers
KW - Graphene
KW - Shubnikov-de Haas effect
UR - http://www.scopus.com/inward/record.url?scp=76949093728&partnerID=8YFLogxK
U2 - 10.1016/j.physe.2009.11.144
DO - 10.1016/j.physe.2009.11.144
M3 - Article
AN - SCOPUS:76949093728
VL - 42
SP - 699
EP - 702
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 4
ER -