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Two-dimensional materials and topological phases: prediction and control of its properties

Grant number: 19/20857-0
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): June 01, 2020
Effective date (End): September 30, 2021
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal researcher:Adalberto Fazzio
Grantee:Felipe David Crasto de Lima
Home Institution: Centro Nacional de Pesquisa em Energia e Materiais (CNPEM). Ministério da Ciência, Tecnologia e Inovações (Brasil). Campinas , SP, Brazil


Recently, the climatic and economic changes of the world have lead to a search for materials more energetically efficient. Within this scenario, two-dimensional materials and topological phases of matter are prominent candidates to fulfill this task. Currently, topological materials are transiting from the theoretical physics to the experimental chemistry, where focused applications regarding energy consumption reduction, and spin to charge conversion has already been proven experimentally. Concomitantly, following the industrial miniaturization tendencies, and enhanced quantum effects, two-dimensional materials are a key element in future device designs.This project has three main goals, (i) the exploration of a Brazilian, naturally occurring, class of two-dimensional topological materials; (ii) predicting new two-dimensional materials and its applications; and (iii) the exploration of interface phenomena in topological insulator materials. From (i) within first-principle calculations, we intend to unveil the stability of Jacutingaite related phases, a prominent topological material, while further explore its properties and applications. In (ii) a combination of Big-data analysis, machine-learning, and materials simulations approaches will be employed in order to predict new two-dimensional materials and lattices design. Furthermore, in (iii) by designing topological insulator surfaces with broken inversion symmetry we can achieve spin-textures from both topological and Rashba-effect origins. Such effects can add up increasing the Rashba-Edelstein effect, which is essential for efficient switching of interface ferromagnetic magnetization direction, for magnetic memory applications. (AU)

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Scientific publications (7)
(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)
DE LIMA, F. CRASTO; FAZZIO, A.. Emergent quasiparticles in Euclidean tilings. NANOSCALE, v. 13, n. 10, . (19/20857-0, 17/02317-2)
DE LIMA, F. CRASTO; FAZZIO, A.; MCLEAN, A. B.; MIWA, R. H.. Simulations of X-ray absorption spectroscopy and energetic conformation of N-heterocyclic carbenes on Au(111). Physical Chemistry Chemical Physics, v. 22, n. 37, p. 21504-21511, . (19/20857-0)
CRASTO DE LIMA, F.; FAZZIO, A.. Bandgap evolution in nanographene assemblies. Physical Chemistry Chemical Physics, v. 23, n. 19, p. 11501-11506, . (19/20857-0, 17/02317-2)
DE LIMA, F. CRASTO; MIWA, R. H.; FAZZIO, A.. Jacutingaite-family: A class of topological materials. Physical Review B, v. 102, n. 23, . (19/20857-0, 17/02317-2)
DE LIMA, FELIPE C.; SCHLEDER, GABRIEL R.; SOUZA JUNIOR, JOAO B.; SOUZA, FLAVIO L.; DESTRO, FABRICIO B.; MIWA, ROBERTO H.; LEITE, EDSON R.; FAZZIO, ADALBERTO. Unveiling the dopant segregation effect at hematite interfaces. Applied Physics Letters, v. 118, n. 20, . (17/18139-6, 19/20857-0, 13/07296-2, 17/02317-2, 18/05159-1)
FOCASSIO, BRUNO; SCHLEDER, GABRIEL R.; DE LIMA, FELIPE CRASTO; LEWENKOPF, CAIO; FAZZIO, ADALBERTO. morphous Bi2Se3 structural, electronic, and topological nature from first principle. Physical Review B, v. 104, n. 21, . (17/02317-2, 17/18139-6, 19/04527-0, 19/20857-0)
DE LIMA, FELIPE CRASTO; FAZZIO, ADALBERTO. t the Verge of Topology: Vacancy-Driven Quantum Spin Hall in Trivial Insulator. Nano Letters, v. 21, n. 22, p. 9398-9402, . (17/02317-2, 19/20857-0)

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