Luiz Sampaio Senior Researcher · CBPF/MCTI · Rio de Janeiro

Publications

2025

Disentangling edge and bulk spin-to-charge interconversion in MoS₂ monolayer flakes

RT Victor, SH Safer, JR Morroquin, M Costa, JF Felix, V Carozo, LC Sampaio, F Garcia

Nature Communications, 16, 3075 (2025)

2023

Synthetic route to low damping in ferromagnetic thin-films

S Azzawi, A Umerski, LC Sampaio, SA Bunyaev, GN Kakazi, D Atkinson

APL Materials, 11, 1 (2023)

Automated mechanical exfoliation technique: a spin pumping study in YIG/TMD heterostructures

RT Victor, JR Morroquin, J Ricardo, SH Safer, DA Dugato, BS Archanjo, LC Sampaio, F Garcia, JF Felix

Nanoscale Horizons, 8, 1568–1576 (2023)

2022

Reproducible low Gilbert Damping Yttrium Iron Garnet by Magnetron Sputtering

R Torrão, OC Alves, BS Archanjo, LC Sampaio, F Garcia

Journal of Alloys and Compounds, 923, 166300 (2022)

Magnetoelastic modes in Néel domain walls

D Froes, M Arana, JP Sinnecker, LC Sampaio

Journal of Applied Physics, 132, 223908 (2022)

Recent progress in the spin Seebeck and spin Peltier effects in insulating magnets

Samir S Costa, LC Sampaio

Journal of Magnetism and Magnetic Materials, 547, 168773 (2022)

2021

Acoustic wave surfing: spin waves and spin pumping driven by elastic wave

D Froes, M Arana, LC Sampaio, JP Sinnecker

Journal of Physics D: Applied Physics, 54, 255001 (2021)

2020

Magnon theory for the spin Peltier effect

SS Costa, LC Sampaio

Journal of Applied Physics, 53, 355001 (2020)

2019

Influence of the magnon-phonon relaxation in the magnon transport under thermal gradient in yttrium iron garnet

SS Costa, LC Sampaio

Journal of Physics: Condensed Matter, 31, 275804 (2019)

2018

Oscillatory interlayer coupling in spin Hall systems

AM Gonçalves, F Garcia, HK Lee, A Smith, PR Soledade, CAC Passos, M Costa, NM Souza-Neto, IN Krivorotov, LC Sampaio, I Barsukov

Scientific Reports, 8, 2318 (2018)

2017

Enhanced magnetoresistance and pinning-depinning processes of vortex domain walls in ferromagnetic nanowires

PR Soledade, J Brandão, A Mello, F Garcia, LC Sampaio

Materials Research Express, 4, 025034 (2017)

Trajectory and chirality of vortex domain walls in ferromagnetic nanowires with an asymmetric Y-branch

J Brandão, A Mello, F Garcia, LC Sampaio

Journal of Applied Physics, 121, 093905 (2017)

2015

(Ga,In)P nanowires grown without intentional catalyst

CF Cerqueira, CB Viana, C da Luz-Lima, N Perea-Lopez, M Terrones, E Falcão, AL Gomes, R Chassagnon, AL Pinto, LC Sampaio, M Sacilotti

Journal of Crystal Growth, 431, 72 (2015)

2014

Field-dependent perpendicular magnetic anisotropy in CoFeB thin films

I Barsukov, Yu Fu, AM Gonçalves, M Spasova, M Farle, LC Sampaio, RE Arias, IN Krivorotov

Applied Physics Letters, 105, 152403 (2014)

Control of the magnetic vortex chirality in Permalloy nanowires with asymmetric notches

J Brandão, RL Novak, H Lozano, PR Soledade, A Mello, F Garcia, LC Sampaio

Journal of Applied Physics, 116, 193902 (2014)

2012

Vortex core magnetization dynamics induced by thermal excitation

Tiago S Machado, Tatiana G Rappoport, Luiz C Sampaio

Applied Physics Letters, 100, 112404 (2012)

2011

Magnetotransport in nanostructures: The role of inhomogeneous currents

Tiago S Machado, M Argollo de Menezes, Tatiana G Rappoport, Luiz C Sampaio

Journal of Applied Physics, 109, 093904 (2011)

2010

Model for the growth of electrodeposited ferromagnetic aggregates under an in-plane magnetic field

C Cronemberger, LC Sampaio, AP Guimarães, P Molho

Physical Review E, 81, 021403 (2010)

2009

Magnetoresistance and magnetization reversal of single Co nanowires

RA Silva, TS Machado, G Cernicchiaro, AP Guimarães, LC Sampaio

Physical Review B, 79, 134434 (2009)

2008

Static and dynamic properties of vortices in anisotropic magnetic disks

Tiago S Machado, TG Rappoport, LC Sampaio

Applied Physics Letters, 93, 112507–112509 (2008)

Magnetic vortices in tridimensional nanomagnetic caps observed using transmission electron microscopy and magnetic force microscopy

Márcio M Soares, Emilio De Biasi, Letícia N Coelho, Maurício C dos Santos, Fortunato S de Menezes, Marcelo Knobel, Luiz C Sampaio, Flávio Garcia

Physical Review B, 77, 224405–224412 (2008)

2006

Growth of fractal electrodeposited aggregates under action of electric and magnetic fields using a modified diffusion-limited aggregation algorithm

Carolina M Cronemberger, LC Sampaio

Physical Review E, 73, 041403 (2006)

Lasing threshold of diffusive random lasers in three dimensions

FA Pinheiro, LC Sampaio

Physical Review A, 73, 013826 (2006)

Imaging of Domain Wall Motion in Small Magnetic Particles through Near-field Microscopy

Jeroen Schoenmaker, Antonio Domingues dos Santos, Yves Souche, Antonio Carlos Seabra, Luiz C Sampaio

Applied Physics Letters, 88, 062506 (2006)

2005

Magnetic-induced second harmonic generation of light by exchange coupled bilayers

LC Sampaio, J Hamrle, VV Pavlov, J Ferré, P Georges, A Brun, H Le Gall, J Ben Youssef

Journal of the Optical Society of America B, 22(1), 119 (2005)

Domain patterning and thermodynamic properties in magnetic films with perpendicular anisotropy

FS de Menezes, LC Sampaio

Physical Review B, 72, 104413 (2005)

2004

In-depth selectivity of the Magnetic Second Harmonic Generation (MSHG) of light in a multilayer structure

LC Sampaio, J Hamrle, A Mougin, J Ferré, F Garcia, F Fettar, B Dieny, A Brun

Physical Review B, 70, 104403 (2004)

2003

High-resolution X-ray diffraction beamline at the LNLS for the study of charge, orbital and magnetic structures

C Giles, F Yokaichiya, SW Kycia, LC Sampaio, DC Ardiles-Saravia, MKK Franco, RT Neuenschwander

Journal of Synchrotron Radiation, 10, 430 (2003)

Probing interface magnetism in the FeMn/NiFe exchange bias system using magnetic second harmonic generation

Luiz C Sampaio, Alexandra Mougin, Jacques Ferré, Patrick Georges, Alain Brun, Harry Bernas, Stefan Poppe, Tim Mewes, Jurgen Fassbender, Burkard Hillebrands

Europhysics Letters, 63(6), 819 (2003)

2002

A depth profile XMCD study of Au/CoO/Co

AD Alvarenga, F Garcia, WD Brewer, M Gruyters, M Gierlings, MS Reis, P Panissod, LC Sampaio, AP Guimarães

Journal of Magnetism and Magnetic Materials, 242–245, 958 (2002)

2001

Power-law relaxation decay in two-dimensional arrays of magnetic dots interacting by long-range dipole-dipole interactions

LC Sampaio, R Hyndman, FS de Menezes, JP Jamet, P Meyer, J Gierak, C Chappert, V Mathet, J Ferré

Physical Review B, 64, 184440 (2001)

Tailoring coercivity in an array of glass-coated microwires

EHCP Sinnecker, FS de Menezes, LC Sampaio, M Knobel, M Vazquez

Journal of Magnetism and Magnetic Materials, 226–230, 1467 (2001)

Electromagnetic scattering by small magnetic particles

FA Pinheiro, AS Martinez, LC Sampaio

Journal of Magnetism and Magnetic Materials, 226–230, 1951 (2001)

X-Ray Magnetic Circular Dichroism in Fe/NiO thin films

AD Alvarenga, F Garcia, LC Sampaio, C Giles, RA Simão, CA Achete

Journal of Magnetism and Magnetic Materials, 233, 74 (2001)

Co magnetic instability study in RCo₃ by XMCD

F Garcia, LC Sampaio, AY Takeuchi, HCN Tolentino

Journal of Magnetism and Magnetic Materials, 233, 48 (2001)

2000

Vanishing of energy transport velocity and diffusion constant of electromagnetic waves in disordered magnetic media

FA Pinheiro, AS Martinez, LC Sampaio

Physical Review Letters, 85, 5563 (2000)

Magnetic microwires as macrospins in long-range dipole-dipole interaction

LC Sampaio, EHCP Sinnecker, GR Cernichiaro, M Knobel, M Vazquez, J Velazquez

Physical Review B, 61, 8976 (2000)

New effects in light scattering in disordered media and coherent backscattering cone: systems of magnetic particles

FA Pinheiro, AS Martinez, LC Sampaio

Physical Review Letters, 84, 1435 (2000)

1999

Uniaxial in-plane magnetic anisotropy and exchange bias in Sm/Fe bilayers

HJ Santos, FA Pinheiro, AY Takeuchi, LC Sampaio, RA Simão, CA Achete, M Cremona

Physical Review B, 60, 68 (1999)

1997

Nonextensivity and Tsallis statistics in magnetic systems

LC Sampaio, MP de Albuquerque, FS de Menezes

Physical Review B, 55, 5611 (1997)

1996

Magnetic relaxation and formation of magnetic domains in ultrathin magnetic films with perpendicular anisotropy

LC Sampaio, MP de Albuquerque, FS de Menezes

Physical Review B, 54(19), 6465 (1996)

1990

Intrinsic Domain Wall Pinning in Hf(Fe₀.₅Al₀.₅)₂

LC Sampaio, SF da Cunha

Journal of Magnetism and Magnetic Materials, 88, 151 (1990)

Master's Dissertations Advised

Paulo Roberto Soledade

Transporte eletrônico em junções metal magnético e semicondutor

2012

Alexandre Medeiros Gonçalves

Fabricação e Transporte eletrônico em nanofios de cobalto

2010

Jeovani Brandão

Propriedades Magnéticas de Microdiscos de Permalloy (Ni₈₀Fe₂₀)

2010

Naiara Yohanna Klein

Nanofios de Co: Fabricação, Análise Estrutural e Medidas de Transporte Eletrônico

2010

Carolina Ferreira Cerqueira

Propriedades estruturais e de transporte eletrônico de ZnO eletrodepositado sobre Pt

2010

Tiago Siman Machado

Operações lógicas com sistemas magnéticos

2007

Felipe Arruda de Araújo Pinheiro

Propagação de ondas eletromagnéticas em meios magnéticos desordenados: localização fraca, velocidade de transporte de energia e constante de difusão

2000

Doctoral Theses Advised

Carolina Ferreira Cerqueira

Produção e Caracterização de Estruturas Semicondutoras: Filmes de ZnO/Ni e Nanofios de ZnO e GaInP

2015

Alexandre Medeiros Gonçalves

Dinâmica da magnetização e propriedades de transporte em nanoestruturas

2015

Naiara Yohana Klein

Fabricação de nanoestruturas com uso de litografia por feixe de elétrons

2015

Jeovani Brandão

Medidas magneto-ópticas em nanoestruturas

2014

Tiago Siman Machado

Transporte elétrico em nano-estruturas magnéticas

2011

Carolina Mendes Cronemberger

Simulação do Crescimento de Estruturas Fractais sob Ação de Campo Magnético

2009

Flávio Garcia

Estudo da Instabilidade Magnética do Co por Dicroismo Circular Magnético de Raios-X nos Compostos RCo

2000

Fortunado S. de Menezes

Relaxação da magnetização e formação de domínios magnéticos em filmes finos

1999