H-Index & Metrics Top Publications

H-Index & Metrics

Discipline name H-index Citations Publications World Ranking National Ranking
Materials Science H-index 59 Citations 12,161 435 World Ranking 3383 National Ranking 13

Overview

What is he best known for?

The fields of study he is best known for:

  • Electrical engineering
  • Condensed matter physics
  • Semiconductor

His primary scientific interests are in Condensed matter physics, Magnetoresistance, Ferromagnetism, Spin valve and Nuclear magnetic resonance. His study in Condensed matter physics is interdisciplinary in nature, drawing from both Annealing, Magnetization, Permalloy and Superferromagnetism. His Magnetoresistance research incorporates elements of Optoelectronics, Quantum tunnelling, Nanotechnology and Analytical chemistry.

His biological study spans a wide range of topics, including Thin film, Oxide and Coercivity. His Spin valve study also includes fields such as

  • Magnetic nanoparticles that connect with fields like DNA and Biomagnetism,
  • Signal which intersects with area such as Microsphere. His Nuclear magnetic resonance research focuses on Tunnel magnetoresistance and how it relates to Ion beam.

His most cited work include:

  • Magnetoresistive-based biosensors and biochips. (390 citations)
  • Biodetection using magnetically labeled biomolecules and arrays of spin valve sensors (invited) (195 citations)
  • Thermodynamic fluctuations in the superconductor Y 1 Ba 2 Cu 3 O 9 − δ : Evidence for three-dimensional superconductivity (184 citations)

What are the main themes of his work throughout his whole career to date?

His primary areas of investigation include Condensed matter physics, Magnetoresistance, Optoelectronics, Spin valve and Magnetization. His research in Condensed matter physics tackles topics such as Anisotropy which are related to areas like Magnetic anisotropy. He combines subjects such as Annealing, Quantum tunnelling, Nuclear magnetic resonance and Analytical chemistry with his study of Magnetoresistance.

His Optoelectronics research is multidisciplinary, incorporating perspectives in Noise, Nanotechnology and Voltage. His study in Nanotechnology focuses on Biochip, Biosensor and Magnetic nanoparticles. His Ferromagnetism research is multidisciplinary, incorporating elements of Exchange bias, Coercivity and Superparamagnetism.

He most often published in these fields:

  • Condensed matter physics (41.62%)
  • Magnetoresistance (34.76%)
  • Optoelectronics (20.73%)

What were the highlights of his more recent work (between 2015-2021)?

  • Optoelectronics (20.73%)
  • Condensed matter physics (41.62%)
  • Magnetoresistance (34.76%)

In recent papers he was focusing on the following fields of study:

Optoelectronics, Condensed matter physics, Magnetoresistance, Nanotechnology and Tunnel magnetoresistance are his primary areas of study. His studies in Optoelectronics integrate themes in fields like Image resolution, Noise and Voltage. His work in the fields of Condensed matter physics, such as Spin-½, overlaps with other areas such as Perpendicular.

His studies deal with areas such as Optics, Electrical engineering, Nuclear magnetic resonance, Biasing and Quantum tunnelling as well as Magnetoresistance. His work in Biochip and Biosensor is related to Nanotechnology. The Tunnel magnetoresistance study combines topics in areas such as Seebeck coefficient, Annealing and Nanopillar.

Between 2015 and 2021, his most popular works were:

  • Femtosecond control of electric currents in metallic ferromagnetic heterostructures (118 citations)
  • Opportunities and challenges for spintronics in the microelectronics industry (56 citations)
  • Spintronic Sensors (50 citations)

In his most recent research, the most cited papers focused on:

  • Electrical engineering
  • Semiconductor
  • Optics

Paulo P. Freitas spends much of his time researching Optoelectronics, Magnetoresistance, Nanotechnology, Condensed matter physics and Tunnel magnetoresistance. His Optoelectronics study combines topics from a wide range of disciplines, such as Spintronics and Voltage, Rectifier. His Magnetoresistance research includes elements of Flexible electronics, Noise, Electrical engineering, Magnetic flux and Biasing.

The Nanotechnology study which covers Biomedical engineering that intersects with Magnetic nanoparticles, Matrix and Visual cortex. His Condensed matter physics research incorporates themes from Spin-transfer torque, Demagnetizing field, Magnetic hysteresis, Magnetic energy and Anisotropy. His Tunnel magnetoresistance research includes themes of Seebeck coefficient, Signal, Quantum tunnelling and Spin-½.

This overview was generated by a machine learning system which analysed the scientist’s body of work. If you have any feedback, you can contact us here.

Top Publications

Magnetoresistive-based biosensors and biochips.

Daniel L. Graham;Hugo A. Ferreira;Paulo P. Freitas.
Trends in Biotechnology (2004)

524 Citations

Thermodynamic fluctuations in the superconductor Y 1 Ba 2 Cu 3 O 9 − δ : Evidence for three-dimensional superconductivity

P. P. Freitas;C. C. Tsuei;T. S. Plaskett.
Physical Review B (1987)

339 Citations

Biodetection using magnetically labeled biomolecules and arrays of spin valve sensors (invited)

H. A. Ferreira;D. L. Graham;P. P. Freitas;J. M. S. Cabral.
Journal of Applied Physics (2003)

299 Citations

Observation of s‐d exchange force between domain walls and electric current in very thin Permalloy films

P. P. Freitas;L. Berger.
Journal of Applied Physics (1985)

244 Citations

Phase coherent precessional magnetization reversal in microscopic spin valve elements.

H. W. Schumacher;C. Chappert;P. Crozat;R. C. Sousa.
Physical Review Letters (2003)

235 Citations

Interacting ferromagnetic nanoparticles in discontinuous Co 80 Fe 20 /Al 2 O 3 multilayers: From superspin glass to reentrant superferromagnetism

W. Kleemann;O. Petracic;Ch. Binek;G. N. Kakazei.
Physical Review B (2001)

232 Citations

Large tunneling magnetoresistance enhancement by thermal anneal

R. C. Sousa;J. J. Sun;V. Soares;P. P. Freitas.
Applied Physics Letters (1998)

230 Citations

Single magnetic microsphere placement and detection on-chip using current line designs with integrated spin valve sensors: Biotechnological applications

D. L. Graham;H. Ferreira;J. Bernardo;P. P. Freitas.
Journal of Applied Physics (2002)

227 Citations

Planar Hall effect sensor for magnetic micro- and nanobead detection

Louise Wellendorph Ejsing;Mikkel Fougt Hansen;Aric Kumaran Menon;H.A. Ferreira.
Applied Physics Letters (2004)

220 Citations

Quasiballistic magnetization reversal.

H. W. Schumacher;C. Chappert;R. C. Sousa;P. P. Freitas.
Physical Review Letters (2003)

217 Citations

Profile was last updated on December 6th, 2021.
Research.com Ranking is based on data retrieved from the Microsoft Academic Graph (MAG).
The ranking h-index is inferred from publications deemed to belong to the considered discipline.

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