Miguel António da Nova Araújo (Professor Auxiliar c/ Agregação/ Assistant Professor) (CV)

Department of Physics

University of Évora

Colégio Luis Verney, gab 080

7000-671 Évora, Portugal

Tel: 266 745 330 ext: 25407

email: mana@uevora.pt

Also at:

CeFEMA - Centro de Física e Engenharia de Materiais Avançados

Instituto Superior Técnico

Avenida Rovisco Pais

1049-001 Lisboa

Tel (ext./Direct): 1620 / 218 417 620

  Research Interests:

 Theory of Condensed Matter. Strongly Correlated Electronic Systems. Topological electronic systems.    List of Publications

     Here are some selected papers in:

- Topological electronic systems:

-Disorder-induced instability of a Weyl nodal loop semimetal towards a diffusive topological metal with protected multifractal surface states, João S. Silva, Miguel Gonçalves, Eduardo V. Castro, Pedro Ribeiro, Miguel A. N. Araújo, Physical Review B 111, L04116 (2025)

-Delocalization of topological surface states by diagonal disorder in nodal loop semimetals João S. Silva, Miguel A. N. Araújo, Miguel Gonçalves, Pedro Ribeiro, Eduardo V. Castro, Physical Review B 107, 045146 (2023)

-Disorder-driven multifractality transition in Weyl nodal loops, Miguel Gonçalves, Pedro Ribeiro, Eduardo V. Castro and Miguel A. N. Araújo, Physical Review Letters 124 , 136405 (2020)

-Broken-symmetry phases of interacting nested Weyl and Dirac loops, Miguel A. N. Araújo and Linhu Li, Physical Review B 98, 155114 (2018)

-Change of an insulator's topological properties by a Hubbard interaction, Miguel A. N. Araújo, Eduardo V. Castro and Pedro D. Sacramento, Physical Review B 87, 085109 (2013)

-Graphene:

Phase diagram and magnetic collective excitations of the Hubbard model for graphene sheets and layers, N.M.R. Peres, M.A.N Araújo and D. Bozi, Physical Review B 70, 195122 (2004)

Comment on "Gapless Spin-1 Neutral Collective Mode Branch for Graphite", N. M. R. Peres, M. A. N. Araújo, and A. H. Castro Neto, Physical Review Letters 92, 199701 (2004)

-Spintronics:
Transmission of correlated electrons through sharp domain walls in magnetic nanowires: a renormalization group approach, M.A.N. Araújo,  V. K. Dugaev, V. R. Vieira, J Berakdar and J. Barnas, Physical Review B 74, 224429 (2006)

Role of a spin-flip scatterer in a magnetized Lutinger liquid M.A.N. Araújo,  Berakdar , V. K. Dugaev and V. R. Vieira, Physical Review B 76, 205107 (2007)

-Heavy fermion systems:
Electron transmission in normal metal/heavy-fermion superconductor junctions: A two-band model, M. A. N. Araújo and P. D. Sacramento, Physical Review B 77, 134519 (2008)

Electron transmission between normal and heavy electron metallic phases in Kondo lattice systems , M.A.N. Araújo  and A. H. Castro Neto, Physical Review B 75, 115133 (2007)

-Superconductivity:
Quantum waveguide theory of Andreev spectroscopy in multiband superconductors: the case of iron pnicides, M.A.N. Araújo, P.D. Sacramento and V.R. Vieira , Physical  Review B 79, 174529 (2009)

Single vortex structure in two models of iron pnictide s^+- superconductivity, M. A. N. Araújo, M. Cardoso, P. D. Sacramento, New Journal of Physics 11, 113008 (2009)

-Itinerant Magnetism:
Spin spectral weight distribution and energy range of the parent compound La₂CuO₄, M.A.N. Araújo, J. M. P. Carmelo, M. J. Sampaio and S. R. White, Europhysics Letters 98,  67004 (2012)

Spin wave dispersion in La₂CuO₄, N.M.R.Peres and M.A.N. Araújo, Physical Review B 65,  132404 (2002)

Research Projects:

-”Emergent quantum states in novel 2D materials” EXPL/FIS-NAN/1728/2013

-"In search of novel mechanisms to increase the critical temperature of a superconductor'' PTDC/FIS/11134/2009

- “Electronic properties of novel FeAs-based superconductors" PTDC/FIS/101126/2008

-“Electronic transport and magnetic dynamics in low dimensional magnetic systems and nanostructures'' PTDC/FIS/70843/2006

-"Manipulation of spin and charge currents in magnetic nanostructures" POCI-FIS/58746/2004

- “Electronic properties of new materials”, PRAXIS XXI 2/2.1 /FIS/ 302/94