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- Publisher Website: 10.1088/1367-2630/12/10/103037
- Scopus: eid_2-s2.0-77958531152
- WOS: WOS:000284769500002
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Article: The screening of charged impurities in bilayer graphene
Title | The screening of charged impurities in bilayer graphene |
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Authors | |
Issue Date | 2010 |
Citation | New Journal of Physics, 2010, v. 12, article no. 103037 How to Cite? |
Abstract | Positively charged impurities were introduced into a bilayer graphene (BLG) transistor by n-doping with dimethylformamide. Subsequent exposure of the BLG device to moisture resulted in a positive shift of the Dirac point and an increase of hole mobility, suggesting that moisture could reduce the scattering strength of the existing charged impurities. In other words, moisture screened off the 'effective density' of charged impurities. At the early stage of moisture screening the scattering of hole carriers is dominated by long-range Coulomb scatter, but an alternative scattering mechanism should also be taken into consideration when the effective density of impurities is further lowered on moisture exposure. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. |
Persistent Identifier | http://hdl.handle.net/10722/298511 |
ISSN | 2023 Impact Factor: 2.8 2023 SCImago Journal Rankings: 1.090 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhang, Wenjing | - |
dc.contributor.author | Li, Lain Jong | - |
dc.date.accessioned | 2021-04-08T03:08:40Z | - |
dc.date.available | 2021-04-08T03:08:40Z | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | New Journal of Physics, 2010, v. 12, article no. 103037 | - |
dc.identifier.issn | 1367-2630 | - |
dc.identifier.uri | http://hdl.handle.net/10722/298511 | - |
dc.description.abstract | Positively charged impurities were introduced into a bilayer graphene (BLG) transistor by n-doping with dimethylformamide. Subsequent exposure of the BLG device to moisture resulted in a positive shift of the Dirac point and an increase of hole mobility, suggesting that moisture could reduce the scattering strength of the existing charged impurities. In other words, moisture screened off the 'effective density' of charged impurities. At the early stage of moisture screening the scattering of hole carriers is dominated by long-range Coulomb scatter, but an alternative scattering mechanism should also be taken into consideration when the effective density of impurities is further lowered on moisture exposure. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. | - |
dc.language | eng | - |
dc.relation.ispartof | New Journal of Physics | - |
dc.title | The screening of charged impurities in bilayer graphene | - |
dc.type | Article | - |
dc.description.nature | link_to_OA_fulltext | - |
dc.identifier.doi | 10.1088/1367-2630/12/10/103037 | - |
dc.identifier.scopus | eid_2-s2.0-77958531152 | - |
dc.identifier.volume | 12 | - |
dc.identifier.spage | article no. 103037 | - |
dc.identifier.epage | article no. 103037 | - |
dc.identifier.isi | WOS:000284769500002 | - |
dc.identifier.issnl | 1367-2630 | - |