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Breaking of the valley degeneracy (pseudo-spin) in mono and multi-layer graphene: effects of disorder on the electronic and transport properties

Grant number: 12/19060-0
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): April 01, 2013
Effective date (End): January 31, 2017
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Ana Luiza Cardoso Pereira
Grantee:Carlos Jose Paez Gonzalez
Home Institution: Faculdade de Ciências Aplicadas (FCA). Universidade Estadual de Campinas (UNICAMP). Limeira , SP, Brazil
Associated scholarship(s):15/12974-5 - Electronic and transport properties of phosphorene, BE.EP.PD


Considering the possible nanoelectronic applications of graphene, we propose a research project involving the study of the electronic andtransport properties in mono and multilayer graphene, material that has been subject of great interest nowadays. The project involves theimplementation and optimization of numerical calculations to obtain the electronic structure and transport properties of graphene in the presence of disorder and magnetic and electric fields. Particularly, we intend to investigate the effects of disorder and magnetic field on the valley symmetry breaking, both in monolayers and multilayer graphene. This is a subject of great interest recently and that provides an opportunity for the development of electronic devices where it is possible to control this new degree of freedon (pseudospin) offered by graphene. Moreover, thestudy of the proposed models enables analysis of the experimental results which suggest that the effects of magnetic field and disorder withintrinsic and extrinsic conditions allow the creation of a gap in the electronic structure; which is an essential feature in the development of electronics based in graphene.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PAEZ, CARLOS. J.; BAHAMON, DARIO. A.; PEREIRA, ANA L. C.; SCHULZ, PETER. A. Zigzag phosphorene nanoribbons: one-dimensional resonant channels in two-dimensional atomic crystals. BEILSTEIN JOURNAL OF NANOTECHNOLOGY, v. 7, p. 1983-1990, DEC 13 2016. Web of Science Citations: 1.
PAEZ, C. J.; PEREIRA, A. L. C.; RODRIGUES, J. N. B.; PERES, N. M. R. Electronic transport across linear defects in graphene. Physical Review B, v. 92, n. 4 JUL 24 2015. Web of Science Citations: 16.
PAEZ, C. J.; BAHAMON, D. A.; PEREIRA, ANA L. C. Current flow in biased bilayer graphene: Role of sublattices. Physical Review B, v. 90, n. 12 SEP 17 2014. Web of Science Citations: 4.

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