Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | Scuracchio, Pablo Martín | - |
| dc.creator | Costamagna, Sebastian | - |
| dc.creator | Peeters, F. M. | - |
| dc.creator | Dobry, Ariel Oscar | - |
| dc.date | 2016-06-15T18:26:40Z | - |
| dc.date | 2016-06-15T18:26:40Z | - |
| dc.date | 2014-07 | - |
| dc.date | 2016-06-10T18:39:40Z | - |
| dc.date.accessioned | 2019-04-29T15:48:20Z | - |
| dc.date.available | 2019-04-29T15:48:20Z | - |
| dc.date.issued | 2014-07 | - |
| dc.identifier | Scuracchio, Pablo Martín; Costamagna, Sebastian; Peeters, F. M. ; Dobry, Ariel Oscar; Role of atomic vacancies and boundary conditions on ballistic thermal transport in graphene nanoribbons; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 90; 7-2014; 35429-35429 | - |
| dc.identifier | 0556-2805 | - |
| dc.identifier | http://hdl.handle.net/11336/6190 | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/302504 | - |
| dc.description | Quantum thermal transport in armchair and zigzag graphene nanoribbons is investigated in the presence of single atomic vacancies and subject to different boundary conditions. We start with a full comparison of the phonon polarizations and energy dispersions as given by a fifth-nearest-neighbor force-constant model (5NNFCM) and by elasticity theory of continuum membranes (ETCM). For free-edge ribbons, we discuss the behavior of an additional acoustic edge-localized flexural mode, known as fourth acoustic branch (4ZA), which has a small gap when it is obtained by the 5NNFCM. Then, we show that ribbons with supported edges have a sample-size dependent energy gap in the phonon spectrum which is particularly large for in-plane modes. Irrespective to the calculation method and the boundary condition, the dependence of the energy gap for the low-energy optical phonon modes against the ribbon width W is found to be proportional to 1/W for in-plane, and 1/W2 for out-of-plane phonon modes. Using the 5NNFCM, the ballistic thermal conductance and its contributions from every single phonon mode are then obtained by the nonequilibrium Green´s function technique. We found that, while edge and central localized single atomic vacancies do not affect the low-energy transmission function of in-plane phonon modes, they reduce considerably the contributions of the flexural modes. On the other hand, in-plane modes contributions are strongly dependent on the boundary conditions and at low temperatures can be highly reduced in supported-edge samples. These findings could open a route to engineer graphene based devices where it is possible to discriminate the relative contribution of polarized phonons and to tune the thermal transport on the nanoscale. | - |
| dc.description | Fil: Scuracchio, Pablo Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina | - |
| dc.description | Fil: Costamagna, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Universiteit Antwerpen; Bélgica | - |
| dc.description | Fil: Peeters, F. M. . Universiteit Antwerpen; Bélgica | - |
| dc.description | Fil: Dobry, Ariel Oscar. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | American Physical Society | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.035429 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevB.90.035429 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.90.035429 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1407.6048v1 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/arxiv/1407.6048v1 | - |
| dc.rights | info:eu-repo/semantics/restrictedAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.source.uri | http://hdl.handle.net/11336/47415 | - |
| dc.subject | Graphene | - |
| dc.subject | Thermal Conductivity | - |
| dc.subject | Nanoribbons | - |
| dc.subject | Ballistic | - |
| dc.subject | Física de los Materiales Condensados | - |
| dc.subject | Ciencias Físicas | - |
| dc.subject | CIENCIAS NATURALES Y EXACTAS | - |
| dc.title | Role of atomic vacancies and boundary conditions on ballistic thermal transport in graphene nanoribbons | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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