Short CV/Education and training

  • 2001
    PhD with Honors in Physics, University Complutense of Madrid, Spain

Selected publications

  • "Intracell changes in epitaxially strained YBa2Cu3O7-x ultrathin layers in YBa2Cu3O7-x/ PrBa2Cu3O7 superlattices", M. Varela, Z. Sefrioui , D. Arias, M. A. Navacerrada, M. Lucía, M. A. López de la Torre, C. León, G. Loos, F. Sánchez-Quesada and J. Santamaría. Physical Review Letters 83 3936-3939 (1999).

  • "Direct evidence for block-by-block growth in high-temperature superconductor ultra-thin films". M. Varela, W. Grogger, D. Arias, Z. Sefrioui, C. León, C. Ballesteros, K. M. Krishnan, J. Santamaría. Physical Review Letters 86, 5156-5159 (2001). [Selected by the Virtual Journal of Nanoscale Science & Technology,,vol 3, num. 23 (2001)].

  • "Spectroscopic identification of single atoms within a bulk solid". M. Varela, A. Lupini, H.M. Christen, N. Dellby, O.L. Krivanek, P.D. Nellist, S.J. Pennycook. Physical Review Letters 92 95502 (2004) [Article selected by the Virtual Journal of Nanoscale Science & Technology,,vol 9, num. 10 (2004)]

  • "Enhanced current transport at grain boundaries in high-Tc superconductors". R.F. Klie, J. P. Buban , M. Varela, A. Franceschetti, C. Jooss, Y. Zhu, S. T. Pantelides, S. J. Pennycook. Nature, 435, 475-478 (2005).

  • "Epitaxial stabilization of ferromagnetism in the nanophase of FeGe". C. Zeng, P.R.C. Kent, M. Varela, M. Eisenbach, G. M. Stocks, M. Torija, J. Shen, H. Weitering. Physical Review Letters, 96, 127201 (2006)

  • "Orbital-occupancy versus charge ordering and the strength of electron correlations in electron-doped CaMnO3". W. Luo, A. Franceschetti, M. Varela, J. Tao, S. J. Pennycook, S.T. Pantelides. Physical Review Letters, 99, 036402 (2007).

  • "Direct measurement the low temperature spin-state transition in LaCoO3", R.F. Klie, J.C. Zheng, Y. Zhu, M. Varela, J. Wu, and C. Leighton. Physical Review Letters, 99, 047203 (2007).

  • "Colossal ionic conductivity at interfaces of epitaxial YSZ/SrTiO3 heterostructures". J. García-Barriocanal, A. Rivera-Calzada, M. Varela, Z. Sefrioui, E. Iborra, C. Leon, S. J. Pennycook, J. Santamaría. Science, 321, 676-680 (2008). [Article selected by the Virtual Journal of Nanoscale Science & Technology,,vol 18, num. 6 (2008)]

  • "Direct imaging of nanoscale phase separation in La0.55Ca0.45MnO3: Relationship to colossal magnetoresistance". J Tao, D. Niebieskikwiat, M. Varela, W. Luo, M. Chofield, Y. Zhu, M. B. Salamon, J. M. Zuo, S. T. Pantelides, S. J. Pennycook. Physical Review Letters, 103, 097202 (2009). [Article selected by the Virtual Journal of Nanoscale Science & Technology,,vol 20, num. 10 (2009)]

  • "Origin of colossal ionic conductivity in oxide multilayers: interface induced sublattice disorder", T. J. Penycook, M. J. Beck, M. Varela, S. J. Pennycook, S. T. Pantelides. Physical Review Letters, 104 115901 (2010).


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