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Synthesis and characterization of superconducting heavy fermion nanowires of the CeMnIn3n+2 (M = Co, Rh, In; n = 0,1) series

Grant number: 20/10580-8
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): November 01, 2020
Effective date (End): October 31, 2022
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Pascoal Jose Giglio Pagliuso
Grantee:Maria Helena Carvalho da Costa
Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:17/10581-1 - Emergent phenomena in reduced dimension systems, AP.TEM

Abstract

In this project we are proposing the synthesis of new intemetallic compounds in the form of superconducting heavy fermion nanowires of the CeMnIn3n+2 (M = Co, Rh, In; n = 0,1) series. Their growth will be achieved through nanowire production technology Metallic-Flux Nanonucleation (MFNN) (Patent - INPI - BR 10 2014 019794 0 and international patent in progress # WO2016023089 developed by Unicamp's researchers from groups GPOMS/LMBT (partnership led by Profs. Pascoal G. Pagliuso and Kleber R. Pirota) in 2014 for metallic nanowire production (diameters between 15 - 500 nm and average length of 1 $\mu$m). The electronic, structural, magnetic, transport and thermodynamic properties of this kind of materials will be thoroughly investigated, keeping the nanowires' dimensionality (e.g. diameter), magnetic fields (d 14 T), high pressures (d 30 kbar) and low temperatures (e 50 mK) as control parameters. For this purpose, experiments aiming to explore macroscopic properties such as electric resistivity, Hall effect, magnetization, dc/ac magnetic susceptibility, and specific heat. Subsequently, selected samples will be studied through microscopic techniques, for instance electronic spin resonance (ESR) (in collaboration with Prof. Carlos Rettori), Nuclear Magnetic and Quadrupolar resonances (NMR e NQR) (in collaboration with Prof. Ricardo R. Urbano), Raman scattering (in collaboration with Prof. E. Granado), powder diffraction, magnetic diffraction, elemental analysis (EDS, WDS), X-ray absorption (XANES, EXAFS, XMCD) (in collaboration with Prof. E. Granado) and ARPES (in collaboration with Profa. C. Adriano)