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Ab initio study of superconducting and topological systems

Grant number: 20/08258-0
Support Opportunities:Scholarships in Brazil - Doctorate
Start date: October 01, 2020
End date: October 31, 2024
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Luiz Tadeu Fernandes Eleno
Grantee:Pedro Nunes Ferreira
Host Institution: Escola de Engenharia de Lorena (EEL). Universidade de São Paulo (USP). Lorena , SP, Brazil
Associated scholarship(s):21/13441-1 - Ab initio evolutionary crystal structure prediction of transition metal tellurides under pressure, BE.EP.DR

Abstract

With the growing interest of the scientific and technological community in the discovery of novel topological materials, especially metallic systems, first-principles electronic-structure methods and effective models established themselves as the central pillar, providing a theoretical basis for predicting new systems and the understanding of the fundamental electronic state, thus enabling a direct comparison between theory and experiment. The present PhD project aims to investigate novel superconducting and topological semimetals (Weyl/Dirac) with unconventional phases of scientific and technological interest. For this, the most recent theoretical-computational methods based on the Density Functional Theory (DFT) and semi-empirical tight-binding models will be used. Structural, electronic, vibrational and topological properties of transition metal dicalcogenides systems, of composition ZrTe2, NiTe2 and PtTe2, will be investigated, with intercalating elements in the van der Waals gap in function of composition and pressure; and new possible topological materials, still unexplored, according to the theory of topological quantum chemistry. The work will be carried out in collaboration with experimental groups, developing and characterizing such materials. In this way, we intend to describe the physical mechanisms and exotic quantum states emerging from these systems, and propose, a posteriori, efficient ways to manipulate such states.

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Scientific publications (14)
(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)
DORINI, THIAGO T.; DE FREITAS, BRUNO X.; FERREIRA, PEDRO P.; CHAIA, NABIL; SUZUKI, PAULO A.; JOUBERT, JEAN-MARC; NUNES, CARLOS A.; COELHO, GILBERTO C.; ELENO, LUIZ T. F.. 2 phase site occupancies in the Cr-Si-B system: a combined synchroton-XRD/first-principles stud. SCRIPTA MATERIALIA, v. 199, . (19/05005-7, 18/10835-6, 20/08258-0)
DE FARIA, L. R.; FERREIRA, P. P.; CORREA, L. E.; ELENO, L. T. F.; TORIKACHVILI, M. S.; MACHADO, A. J. S.. Possible multiband superconductivity in the quaternary carbide YRe2SiC. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, v. 34, n. 6, . (16/11774-5, 19/05005-7, 19/14359-7, 19/17878-5, 20/08258-0)
FERREIRA, PEDRO PIRES; CARVALHO, FELIPE MORENO; ARIZA-ECHEVERRI, EDWAN ANDERSON; DELFINO, PEDRO MEIRELLES; BAURI, LUIZ FELIPE; FERREIRA, ANDREI MARX; BRAGA, ANA PAOLA; ELENO, LUIZ TADEU FERNANDES; GOLDENSTEIN, HELIO; TSCHIPTSCHIN, ANDRE PAULO. Synergism between B and Nb Improves Fire Resistance in Microalloyed Steels. METALS, v. 13, n. 1, p. 8-pg., . (19/05005-7, 20/08258-0)
FERREIRA, P. P.; MANESCO, A. L. R.; DORINI, T. T.; CORREA, L. E.; WEBER, G.; MACHADO, A. J. S.; ELENO, L. T. F.. Strain engineering the topological type-II Dirac semimetal NiTe2. PHYSICAL REVIEW B, v. 103, n. 12, p. 13-pg., . (19/14359-7, 16/10167-8, 19/05005-7, 20/08258-0, 19/07082-9, 18/08819-2, 18/10835-6)
DA SILVA, ANTONIO AUGUSTO ARAUJO PINTO; FERREIRA, PEDRO PIRES; DORINI, THIAGO TREVIZAM; COELHO, GILBERTO CARVALHO; NUNES, CARLOS ANGELO; ELENO, LUIZ TADEU FERNANDES. Thermodynamic assessment of the Ta-Ge system supported by ab initio calculations. CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, v. 84, p. 7-pg., . (20/08258-0, 21/13441-1)
BHATTACHARYYA, A.; ADROJA, D. T.; JANA, A. K.; PANDA, K.; FERREIRA, P. P.; ZHAO, Y.; YING, T.; HOSONO, H.; DORINI, T. T.; ELENO, L. T. F.; et al. Exploring superconductivity in Ba3Ir4Ge16: Experimental and theoretical insights. Journal of Alloys and Compounds, v. 978, p. 8-pg., . (20/08258-0, 19/05005-7)
BHATTACHARYYA, A.; FERREIRA, P. P.; PANDA, K.; MASUNAGA, S. H.; DE FARIA, L. R.; CORREA, L. E.; SANTOS, F. B.; ADROJA, D. T.; YOKOYAMA, K.; DORINI, T. T.; et al. Electron-phonon superconductivity in C-doped topological nodal-line semimetal Zr5Pt3: a muon spin rotation and relaxation (mu SR) study. JOURNAL OF PHYSICS-CONDENSED MATTER, v. 34, n. 3, . (19/14359-7, 19/05005-7, 18/08819-2, 13/07296-2, 20/08258-0)
FERREIRA, PEDRO P.; CONWAY, LEWIS J.; CUCCIARI, ALESSIO; DI CATALDO, SIMONE; GIANNESSI, FEDERICO; KOGLER, EVA; ELENO, LUIZ T. F.; PICKARD, CHRIS J.; HEIL, CHRISTOPH; BOERI, LILIA. Search for ambient superconductivity in the Lu-N-H system. NATURE COMMUNICATIONS, v. 14, n. 1, p. 10-pg., . (20/08258-0, 21/13441-1)
LUCREZI, ROMAN; FERREIRA, PEDRO P.; AICHHORN, MARKUS; HEIL, CHRISTOPH. Temperature and quantum anharmonic lattice effects on stability and superconductivity in lutetium trihydride. NATURE COMMUNICATIONS, v. 15, n. 1, p. 7-pg., . (20/08258-0, 21/13441-1)
BHATTACHARYYA, A.; LEES, M. R.; PANDA, K.; FERREIRA, P. P.; DORINI, T. T.; GAUDRY, EMILIE; ELENO, L. T. F.; ANAND, V. K.; SANNIGRAHI, J.; BISWAS, P. K.; et al. Nodeless time-reversal symmetry breaking in the centrosymmetric superconductor Sc(5)Co(4)Si(10 )probed by muon-spin spectroscopy. PHYSICAL REVIEW MATERIALS, v. 6, n. 6, p. 10-pg., . (20/08258-0, 19/05005-7)
PEREIRA DOS SANTOS, JULIO CESAR; ARAUJO PINTO DA SILVA, ANTONIO AUGUSTO; FERREIRA, PEDRO PIRES; DORINI, THIAGO TREVIZAM; DE BARROS, DENIS FELIPE; DE ABREU, DANILO ALENCAR; FERNANDES ELENO, LUIZ TADEU; NUNES, CARLOS ANGELO; COELHO, GILBERTO CARVALHO. Thermodynamic modeling of the Al-Nb-V system. CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, v. 74, . (20/08258-0, 17/14853-6, 18/13966-4)
FERREIRA, P. N.; LUCREZI, R.; GUILHON, I.; MARQUES, M.; TELES, L. K.; HEIL, C.; ELENO, L. T. F.. Ab initio modeling of superconducting alloys. MATERIALS TODAY PHYSICS, v. 48, p. 16-pg., . (20/08258-0, 21/13441-1)
PANDA, K.; BHATTACHARYYA, A.; FERREIRA, P. N.; MONDAL, RAJIB; THAMIZHAVEL, A.; ADROJA, D. T.; HEIL, C.; ELENO, L. T. F.; HILLIER, A. D.. Probing the superconducting gap structure of ScRuSi via μSR and first-principles calculations. PHYSICAL REVIEW B, v. 109, n. 22, p. 10-pg., . (20/08258-0, 21/13441-1)
CORREA, LUCAS; FERREIRA, PEDRO S.; DE FARIA, LEANDRO R.; DORINI, THIAGO T.; LUZ, MARIO S. DA; FISK, ZACHARY; TORIKACHVILI, MILTON S.; ELENO, LUIZ T. F.; MACHADO, ANTONIO J. S.. Evidence for multiband superconductivity and charge density waves in Ni-doped ZrTe2. Journal of Alloys and Compounds, v. 907, p. 9-pg., . (19/14359-7, 18/08819-2, 18/10835-6, 19/05005-7, 20/08258-0)