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Álvaro Núñez Vásquez

Phone(s): (56-2) 9784517 , (56-2) 6967359
Departamento de Física, FCFM, Universidad de Chile.
Avda. Blanco Encalada 2008, Santiago, Chile.

Professional Degree

  • Ph.D., Physics, Fall 2006 The University of Texas at Austin Austin, TX.
  • Thesis: Interaction between Collective Coordinates and Quasiparticles in Spintronic Devices.
  • Adviser: Prof. Allan H. MacDonald.
  • B.S., Physics, March 2000 Universidad de Chile Santiago, Chile.

Research Areas

  • Condensed Matter Physics.
  • Nanoscience, spintronics, nanomagnetism.
  • Non-equilibrium quantum mechanics.

National and International Committees and Honors

  • Graduate Fellow KITP. Santa Barbara. Fall 2006 Research Fellowship.
  • ECOS project-stagiere. January 2000. Research Assistantship at L‘Ecole Normale Superiore under supervision of Stephan Fauve.
  • Beca de Excelencia Académica. March 1994. Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile.

Guieded Graduate Thesis (Since 2006)

Ph. D. Level
  • Roberto Troncoso Coña, Universidad de Chile.¡Ongoing, expected graduation 2011.
M. S. level
  • Anibal Lautaro González, Universidad de Chile Thesis: Dipolar effects on magnetic nanostructures Finished, July 2010.
  • Sebastián Díaz Santiago, Universidad de Chile.Thesis: Controlling spin interactions with electric currents Finished, July 2010.
  • Pablo Barrios, Universidad de Chile Ongoing, expected graduation 2011.
  • Paula Urrutia, Universidad de Chile Ongoing, expected graduation 2011.

Conferences (2006 to date)

Talks, seminars and outreach

Invited Talks

  • February 2005 Stanford University, Palo Alto, CA (USA).
Talk: Magnetization dynamics driven by non-equilibrium quasiparticles.
  • September 2006 Universidad T´ecnica Federico Santa Maria, Valparaíso, Chile.
Talk: Spintronics.
  • September 2006 Universidad de Chile, Santiago, Chile.
Talk: Spintronics.
  • October 2006 Pontificia Universidad Católica de Valparaíso,Valparaíso, Chile.
Talk: Spin transfer and magnetization dynamics.
  • March 2008 Universidad de Alicante, Alicante, Spain.
Talk: Effective temperature and Gilbert damping of a current-driven spin.
  • November 2008 Universidad de Chile, Santiago, Chile.
Talk: Quenching points of dimeric single-molecule magnets.
  • March 2010 Universidad de Alicante, Alicante, Spain.
Talk: Room temperature Bose-Einstein condensation of Magnons.
  • March 2010 Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
Talk: Bose-Einstein condensation of Magnons.
  • April 2010 Universidad de Chile, Santiago, Chile.
Talk: Coherence of a Bose-Einstein condensate of Magnons.

Contributed Talks

  • March 2002 “APS March Meeting 2002”, Indianapolis (USA).
Talk: The electronic structure of a fullerene field effect transistor”.
  • March 2003 “APS March Meeting 2003”, Austin, TX (USA).
Talk: Non equilibrium transport of model magnetic heterostructures.
  • April 2003 “DARPA Miniworkshop-Spintronics and Spinphotonics in InAs/GaSb-based Ferromagnetic Semiconductors”, Buffalo, NY (USA).
Talk: Theory of optically induced magnetization switching in GaAs:Mn.
  • March 2004 “APS March Meeting 2004”, Montreal (Canada).
Talk: Spin Transfer without Spin Conservation.
  • March 2005 “APS March Meeting 2005”, Los Angeles, CA (USA).
Talk: Theory of Transport in diluted magnetic semiconductors heterostructures.
  • November 2008 SOCHIFI 2008. Valparaso.
Talk: Domain Wall Motion.
  • January 2009 Workshop on decoherence, correlations and spin effects in Nanostructured Materials, MWN/CIAM, Via del Mar, Chile
Talk: Magnetization Tunneling: beyond the giant spin approximation.
  • July 2009 Workshop Nucleo Cientifico Milenio, Coya, Chile.
Talk: Dzyalonshinskii-Moriya Spin interaction in molecular magnets.
  • July 2010 Workshop Nucleo Cientifico Milenio, Coya, Chile.
Talk: Colossal anisotropy in diluted magnetic topological insulators.

Talks for non specialized audiences

  • January 2009 Universidad de Chile, Santiago, Chile.
Talk: Quantum Mechanics, so far … so close!
  • January 2010 Universidad de Chile, Santiago, Chile.
Talk: Quantum Mechanics, so far … so close!
  • July 2010 Universidad de Chile, Santiago, Chile.
Talk: LASER: 50 years of light and magic.

Publications

2018
  1. J. Chesta Lopez, L.E.F. Foa Torres, A.S. Nunez
    Multiterminal conductance at the surface of a Weyl semimetal
    Phys. Rev. B 97, 125419
  2. M. Flores, E. Cisternas, A. Mella, D. Jullian, A.S. Nunez, M. Soler
    Adsorption of 2-thiophene curcuminoid molecules on a Au(111) surface
    Applied Surface Science 427 (2018) 620-625
  3. R.A. Gallardo, T. Schneider, A. Roldán-Molina, M. Langer, A.S. Núñez, K. Lenz, J. Lindner, P. Landeros
    Symmetry and localization properties of defect modes in magnonic superlattices
    Phys. Rev. B 97, 174404 (2018)

2017
  1. C. Ulloa, R.E. Troncoso, S.A. Bender, R.A. Duine, A.S. Nunez
    Piezospintronic effect in honeycomb antiferromagnets
    Phys. Rev. B 96, 104419
  2. F.J. Peña, A. González, A.S. Nunez, P.A. Orellana, R.G. Rojas, P. Vargas
    Magnetic Engine for the Single-Particle Landau Problem
    Entropy 2017, 19(12), 639
  3. F.J. Peña, A. González, A.S. Nunez, P.A. Orellana, R.G. Rojas, P. Vargas
    Magnetic Engine for the Single-Particle Landau Problem
    Entropy 2017, 19(12), 639
  4. S. Vojkovic, V.L. Carvalho-Santos, J.M. Fonseca, A.S. Nuñez
    Vortex-antivortex pairs induced by curvature in toroidal nanomagnets
    Journal of Applied Physics 121, 113906 (2017) | Published 21 March
  5. A. Roldán-Molina, A.S. Nuñez, R. A. Duine
    Magnonic Black Holes
    Phys. Rev. Lett. 118, 061301 | Published 8 Feb

2015
  1. A. Roldán-Molina, M.J. Santander, A.S. Nuñez, and J. Fernández-Rossier
    Quantum fluctuations stabilize skyrmion textures
    Phys. Rev. B 92, 245436; Published 23 Dec 2015

2016
  1. S.Vojkovic, A.S. Núñez, D. Altbir, V.L. Carvalho-Santos
    Magnetization ground state and reversal modes of magnetic nanotori
    J. Appl. Phys. 120, 033901 (2016); Published 21 Jul 2016
  2. C. Ulloa, A.S. Nuñez
    Solitonlike magnetization textures in noncollinear antiferromagnets
    Phys. Rev. B 93, 134429; Published 29 April 2016
  3. A. Roldán-Molina, A.S. Nuñez, J. Fernández-Rossier
    Topological spin waves in the atomic-scale magnetic skyrmion crystal
    New J. Phys. 18 (2016) 045015; Published 19 April 2016

2015
  1. R.E. Troncoso, C. Ulloa, F. Pesce, A.S. Nuñez
    Antiferromagnetic magnonic crystals
    Phys. Rev. B 92, 224424; Published 17 Dec 2015
  2. M.J. Santander, A.S. Nunez, A. Roldán-Molina, R.E. Troncoso
    Dynamical quenching of tunneling in molecular magnets
    Journal of Magnetism and Magnetic Materials 396 (2015) 176–180; Publisher 15 Dec 2015
  3. V.L. Carvalho-Santos, R.G. Elías, A.S. Nunez
    Spin wave vortex from the scattering on Bloch point solitons
    Annals of Physics 363 (2015) 364–370; Published Dec 2015
  4. M.G.Clerc, S.Coulibaly, D.Laroze, A.O. León, A.S. Núñez
    Alternating spin-polarized current induces parametric resonance in spin valves
    Phys. Rev. B 91, 224426; Published 23 Jun 2015

2014
  1. R.G. Elías, L. Carvalho-Santos, A.S. Núñez, A.D. Verga
    Spin waves scattering on a Bloch point
    Phys. Rev. B 90, 224414; Published 10 December 2014
  2. R. E. Troncoso and A. S. Núñez
    Brownian motion of massive skyrmions in magnetic thin films
    Annals of Physics 351, 850-856
  3. R.E. Troncoso, A.S. Nunez
    Thermally assisted current-driven skyrmion motion
    Physical Review B 89 (22), 5
  4. R.E. Troncoso, A.S. Nunez
    Josephson effects in a Bose-Einstein condensate of magnons
    Annals of Physics 346, 182-194

2013
  1. A. S. Núñez
    Theory of the piezo-spintronic effect
    Solid State Communications 2013, 18

2012
  1. J. A. Otálora, J. A. López-López, A. S. Núñez, and P. Landeros
    Domain wall manipulation in magnetic nanotubes induced by electric current pulses
    Journal of Physics: Condensed Matter 24, 436007

2014
  1. A. Roldan-Molina, M. J. Santander, A.S. Nunez, J. Fernandez-Rossier
    Quantum theory of spin waves in finite chiral spin chains
    Physical Review B 89 (5), 054403

2013
  1. J. A. Otálora, J. A. López-López, P. Landeros, P. Vargas and A. S. Núñez
    Breaking of chiral symmetry in vortex domain wall propagation in ferromagnetic nanotubes
    Journal of Magnetism and Magnetic Materials 341, 86

2012
  1. S. Giri, E. Echegaray, P.W. Ayers, A. Núñez, F. Lund, A. Toro-Labbe
    Insights into the Mechanism of an S(N)2 Reaction from the Reaction Force and the Reaction Electronic Flux
    Journal of Physical chemistry 116, 10015-10026
  2. R.E. Troncoso and A. Núñez
    Dynamics and spontaneous coherence of magnons in ferromagnetic thin films
    Journal of Physics-condensed Matter 24, 36006 (1-11)
  3. S. Díaz and A. Núñez
    Current-induced exchange interactions and effective temperature in localized moment systems
    Journal of Physics-condensed Matter 24, 116001 (1-9)
  4. A. Núñez and J. Fernández Rossier
    Colossal anisotropy in diluted magnetic topological insulators
    Solid State Communications 152, 403-406

2009
  1. J. M. Florez, P. Vargas, A. Núñez
    Instantons and magnetization tunneling:Beyond the giant-spin approximation
    Physica B 404, 2791

2010
  1. P. Landeros and A. Núñez
    Domain wall motion on magnetic nanotubes
    Journal of Applied Physics 108, 033917
  2. J. M. Florez, A. Núñez, C. García, P. Vargas
    Magnetocaloric features of complex molecular magnets: The (Cr/Ni)(2)Cu molecular magnet and beyond
    Journal of Magnetism and Magnetic Materials 268, 1781-1785
  3. A. L. González, P. Landeros, A. Núñez
    Spin wave spectrum of magnetic nanotubes
    Journal of Magnetism and Magnetic Materials, 322 530-535
  4. J.M. Florez, A. Núñez, P. Vargas
    Quenching points of dimeric single-molecule magnets: Exchange interaction effects
    Journal of Magnetism and Magnetic Materials 322, 3623

2011
  1. A. Núñez, E. Suarez, P. Vargas
    Trigonal Distortion of Topologically Confined Channels in Bilayer Graphene
    Applied Physics Letters 98, 262107

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