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- Publisher Website: 10.1088/0256-307X/27/8/087205
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Article: Spin Filter of Graphene Nanoribbon Based Structure
Title | Spin Filter of Graphene Nanoribbon Based Structure | ||||
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Authors | |||||
Keywords | Condensed matter: electrical, magnetic and optical Condensed matter: structural, mechanical & thermal | ||||
Issue Date | 2010 | ||||
Citation | Chinese Physics Letters, 2010, v. 27 n. 8, p. 087205 How to Cite? | ||||
Abstract | Spin-dependent transport properties of the zigzag graphene nano-ribbon (zGNR) based structure Al-zGNR-Al are investigated by ab initio technique where density functional calculation is carried out within the Keldysh non-equilibrium Green's function formalism. The energy band structure of the infinite zigzag ribbon is sensitive to the dangling bonds of carbon atoms on both edge sides. For the three-circle-width zigzag ribbon with one edge monohydrogenated and the other edge dihydrogenated (zGNR(H-H2)), strongly spin-polarized energy bands are found. A spin-down branch is obtained just below the Fermi level while a spin up band appears above it. For the structure Al-zGNR(H-H2)-Al, where three-circle-width and seven-circle-length (3 × 7) zGNR(H-H2) is coupled by two (100) aluminium electrodes, an obvious spin filter property is found as the bias voltage changes. When the length of the sandwiched zGNR(H-H2) ribbon increases, the spin-up current is strongly restrained especially under higher bias voltage. | ||||
Persistent Identifier | http://hdl.handle.net/10722/135356 | ||||
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 0.815 | ||||
ISI Accession Number ID |
Funding Information: Supported by the National Natural Science Foundation of China under Grant No 10947018. |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wan, LH | en_US |
dc.contributor.author | Yu, YJ | en_US |
dc.contributor.author | Wang, B | en_US |
dc.date.accessioned | 2011-07-27T01:34:08Z | - |
dc.date.available | 2011-07-27T01:34:08Z | - |
dc.date.issued | 2010 | en_US |
dc.identifier.citation | Chinese Physics Letters, 2010, v. 27 n. 8, p. 087205 | en_US |
dc.identifier.issn | 0256-307X | - |
dc.identifier.uri | http://hdl.handle.net/10722/135356 | - |
dc.description.abstract | Spin-dependent transport properties of the zigzag graphene nano-ribbon (zGNR) based structure Al-zGNR-Al are investigated by ab initio technique where density functional calculation is carried out within the Keldysh non-equilibrium Green's function formalism. The energy band structure of the infinite zigzag ribbon is sensitive to the dangling bonds of carbon atoms on both edge sides. For the three-circle-width zigzag ribbon with one edge monohydrogenated and the other edge dihydrogenated (zGNR(H-H2)), strongly spin-polarized energy bands are found. A spin-down branch is obtained just below the Fermi level while a spin up band appears above it. For the structure Al-zGNR(H-H2)-Al, where three-circle-width and seven-circle-length (3 × 7) zGNR(H-H2) is coupled by two (100) aluminium electrodes, an obvious spin filter property is found as the bias voltage changes. When the length of the sandwiched zGNR(H-H2) ribbon increases, the spin-up current is strongly restrained especially under higher bias voltage. | - |
dc.language | eng | en_US |
dc.relation.ispartof | Chinese Physics Letters | en_US |
dc.subject | Condensed matter: electrical, magnetic and optical | - |
dc.subject | Condensed matter: structural, mechanical & thermal | - |
dc.title | Spin Filter of Graphene Nanoribbon Based Structure | en_US |
dc.type | Article | en_US |
dc.identifier.email | Wang, B: benwb@hku.hk | en_US |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1088/0256-307X/27/8/087205 | en_US |
dc.identifier.scopus | eid_2-s2.0-78649388852 | - |
dc.identifier.hkuros | 185944 | en_US |
dc.identifier.volume | 27 | en_US |
dc.identifier.issue | 8 | en_US |
dc.identifier.spage | 087205 | en_US |
dc.identifier.epage | 087205 | en_US |
dc.identifier.eissn | 1741-3540 | - |
dc.identifier.isi | WOS:000280577200048 | - |
dc.identifier.issnl | 0256-307X | - |