Biography

Personal

-         Born in San Sebastian (Spain) in January 1963.

-         Primary and Middle School at “La Salle-Herrera” (San Sebastian), High School at “Instituto Bidebieta” (San Sebastian).

University education

-         Graduated in Physics at Universidad Autonoma de Madrid (Spain) in June 1986

-         Doctor in Physics at Universidad Autonoma de Madrid in September 1990. Thesis advisor: Prof. Dr. Rodolfo Miranda, Title “The alkali-oxide/semiconductor interface: band bending and enhanced oxidation” .

Professional background

-         Surface Physics Laboratory at the Universidad Autonoma de Madrid (Spain) 1986-1991: Basque Government predoctoral fellowship (1986-88), research assistant (1988-90) and assistant Professor (1990-91).

-         IBM T. J. Watson Research Center, New York (USA) 1991-1993. Fellow of the Spanish Ministry of Education. IBM post-doc.

-         Surface Physics Laboratory at the Universidad Autonoma de Madrid (Spain) 1993-1995: Researcher.

-         Universidad del País Vasco San Sebastian (Spain), since 1995: 

            Visiting Professor (1995-96), 

           Associated Professor (Profesor Asociado) (1996-98), 

           Professor (Profesor Titular) (1998-2003),

           Full Professor (Catedrático) (2003-

Research

The research activity of our group (Nanophysics Lab San Sebastian) is focused on the description of the morphology and the electronic states in nanostructures. These states are quantum well states in thin films and surface states in stepped surfaces and lateral nanostructures. To this aim we use two experimental techniques: Scanning Tunneling Microscopy (STM) and Angle-resolved Valence-band Photoemission. The STM work is done at the Lab facilities in San Sebastian, by means of a variable temperature STM from OMICRON. The  Photoemission experiments are done at different Synchrotron radiation facilities around the world: SLS at Zürich, ALS at Berkeley (California, USA), ELETTRA at Trieste, BESSY at Berlin, and the SRC at Madison (Wisconsin, USA).

Publications

1.         "Cs and O  adsorption on Si(100)2X1: A model system for promoted oxidation of semiconductors", J. E. Ortega, E. M. Oellig, J. Ferrón y R. Miranda, Phys. Rev.  B 36, 6213 (1987). A.

 2.         "Early Stages of the Alkali-promoted Oxidation of  Silicon", E. G. Michel, J. E. Ortega, M. C. Asensio, E. M. Oellig, J. Ferrón y R. Miranda, Phys. Rev.  B 38, 13399 (1988). A

 3.         "Adsorption of Potassium and Oxygen on GaAs(110): Charge Transfer and Enhanced Oxidation", J. E. Ortega, J. Ferrón, R. Miranda, M. Prietsch, M. Domke, C. Laubschat y G. Kaindl, Phys. Rev. B 39, 12751 (1989). A

 4.         "Enhanced Oxidation of GaAs by Adsorbed K Atoms", J. E. Ortega, J. Ferrón, R. Miranda, M. Prietsch, M. Domke, C. Laubschat y G. Kaindl, Surf. Sci.  211/212, 1106 (1989). A

 5.         "Switching of Band Bending at the Nonreactive CsOx/GaAs(110) Interface", C. Laubschat, M. Prietsch, M. Domke, E. Weschke, G. Remmers, T. Mandel, J. E. Ortega y G. Kaindl, Phys. Rev. Lett.  62, 1306 (1989). A

 6.         "Interface Formation  of Bi-based High Tc Superconductors with Mg and Ag", E. Weschke, M. Domke, C. Laubschat, M. Bodenbach, G. Kaindl, J. E. Ortega y R. Miranda, Z. Phys.  B 74, 191 (1989). A

 7.         "Mechanisms of Band Bending at CsOx /GaAs(110) Interfaces: Influence of Overlayer Stoichiometry and Interfacial Reactivity", M. Prietsch, M. Domke, C. Laubschat, G. Remmers, E. Weschke, T. Mandel, J. E. Ortega y G. Kaindl, J. Vac. Sci. Technol.  B 7, 986 (1989). A

 8.         "Photoemission Study of Interface Formation with Ceramic Superconductors", C. Laubschat, E. Weschke, M. Domke, J. E. Ortega y G. Kaindl, Physica C,  162-164, 1317 (1989). A.

 9.         "Oxidation of Alkali/GaAs(110) Interfaces", G. Remmers, M. Prietsch, C. Laubschat, M. Domke, T. Mandel, J. E. Ortega y G. Kaindl, J. Elect. Spect. Rel. Phenom.  52, 79 (1990). A

10.      "Local Characterization of Ultrathin Oxides on Silicon Wafers by Scanning Tunneling Spectroscopy", A. L. Vázquez de Parga, C. Ocal, J. E. Ortega y R. Miranda, Vacuum  41, 4-6,784 (1990). A

11.      "Growth of K, Rb, and Cs on GaAs(110)", J. E. Ortega y R. Miranda, Appl. Surf. Sci.  56-58, 211 (1992). A

12.      "Growth of Epitaxial Iron Disilicide on Si(100)", J. M. Gallego, J. M. García, J. E. Ortega, A. L. Vázquez de Parga, J. de la Figuera, C. Ocal, y R. Miranda, Surf. Sci.  269/270, 1016 (1992). A

13.      "Unoccupied Orbitals of C and O on Fe(100)", F. J. Himpsel y J. E. Ortega, Surf. Sci. Lett.  268, L-279 (1992). A

14.      "Quantum Well States as Mediators of Magnetic Coupling in Superlattices", J. E. Ortega y F. J. Himpsel, Phys. Rev. Lett. 69, 844 (1992). A

15.      "Electronic Structure of Cu(100), Ag(100), Au(100), and Cu3Au(100) from Inverse Photoemission", F. J. Himpsel y J. E. Ortega, Phys. Rev.  B 46, 9719 (1992). A

16.      " Quantum Well States and Magnetic Coupling between Ferromagnets through a Noble-metal Layer",  J. E. Ortega, F. J. Himpsel, G. J. Mankey y R. F. Willis, Phys. Rev.  B 47, 1540 (1993). A

17.      "Inverse Photoemission Study of Si(100), Ge(100), and GaAs(100): Bulk Bands and Surface States ", J. E. Ortega y F. J. Himpsel Phys. Rev.  B 47, 2130 (1993). A

18.      "Quantum Well States and Magnetic Coupling between Noble Metals and Ferromagnets", J. E. Ortega, F. J. Himpsel, G. J. Mankey y R. F. Willis, J. Appl. Phys.  73, 5771 (1993). A

19.      "Electronic States in Magnetic Quantum Wells and Monolayers", J. E. Ortega, F. J. Himpsel, G. J. Mankey y R. F. Willis, J. Phys. Condens. Matt.  5, A189  (1993). A

20.      "Experimental Determination of the Unoccupied Bands on W(110)", D. Li, P. A. Dowben, J. E. Ortega y F. J. Himpsel, Phys. Rev.  B  47, 12895 (1993). A

21.      "Inverse Photoemission from V, Cr, Mn, Fe, and Co monolayers on Ag(100)", J. E. Ortega y F. J. Himpsel, Phys. Rev.  B 47, 16441 (1993). A

22.      "Influence of Steps on Quantum Well States in Cu/Co(100) Multilayers" J. E. Ortega y F. J. Himpsel, Appl. Phys. Lett. 64, 121 (1994). A

23.      "Unoccupied surface electronic structure of Gd(0001)", D. Li, P. A. Dowben, J. E. Ortega y F. J. Himpsel,  Phys. Rev. B 49, 7734 (1994). A

 24.      "One-dimensional Image State on stepped Cu(100)", J. E. Ortega, F. J. Himpsel, R. Haight y D. Peale, Phys. Rev. B 49, 13859 (1994). A

 25.      "Initial and Final State Contributions to the Core Level Shifts for Gd(0001)", J. E. Ortega, F. J. Himpsel, Dongqi Li y P. A. Dowben, Solid State Comm.  91, 807 (1994). A

 26.      "Quantum Size Effects in Ultrathin Cu(100) Films", G. J. Mankey, R. F. Willis, J. E. Ortega y F. J. Himpsel. J. Vac. Sci. Technol.  A 12 , 2183 (1994). A

 27.      " Edge State and Terrace State for Cu on W(331) and W(110)", F. J. Himpsel y J. E. Ortega, Phys. Rev.  B 50, 4992 (1994). A

 28.      "Quantum Well and Quantum Wire States at Metal Surfaces", F. J. Himpsel, Y. W. Mo, T. Jung, J. E. Ortega, G. J. Mankey y R. F. Willis, Superlattices and Microstructures 15, 237 (1994). A

 29.      "Electronic Structure of Multilayers: Nature of the Magnetic Interlayer Interaction",  F. J. Himpsel, J. E. Ortega, G. J. Mankey y R. F. Willis, Vacuum  46, 1133 (1995). A

 30.      "Lateral Confinement of Surface States on stepped Cu(111)", O. Sánchez, J. M. García, A. L. Vázquez de Parga, P.  Segovia, J. Alvarez, M. Prietsch, J. E. Ortega y R. Miranda, Phys. Rev. B 52, 7894 (1995). A

 31.      "Confining Electrons in less than Two Dimensions: A Spectroscopic Study" J. M. García, O. Sánchez, A. L. Vázquez de Parga, P. Segovia, J. Alvarez, J. E. Ortega y R. Miranda, Appl. Phys. A  61, 609 (1995). A

 32.      "Strain-induced Enhanced Solubility of Au in Epitaxial Films of Fe", C. J. Pastor, C. Limones, J. J. Hinarejos, J. M. García, R. Miranda, J. Gómez-Goñi, J. E. Ortega y H. Abruña Surf. Sci.  364, L505 (1996). A

 33.      "Quantum-Well States and Short Period Oscillations of the Density of States at the Fermi Level in Cu Films Grown on fcc-Co(100)", P. Segovia, E. G. Michel y J. E. Ortega, Phys. Rev. Lett.  77, 3455 (1996). A

 34.      "Quantum Well States in metallic thin Layers" J. E. Ortega, F. J. Himpsel, G. J. Mankey y R. F. Willis, Surf. Rev. and Lett.  4, 361 (1997). A

 35.      "Nanowires on stepped Metal Surfaces" F. J. Himpsel, J. E. Ortega y T. Jung, Surf. Rev. and Lett.  4,  371 (1997). A

 36.       “Morphology and Magnetization changes upon annealing of Fe/Cu(100): An in situ scanning tunneling microscopy and magneto-optical Kerr effect study”, E. Mentz, D. Weiss, J. E. Ortega, A. Bauer y G. Kaindl, J. Appl. Phys. 82, 482 (1997). A

 37.      "Magnetic Nanostructures", F. J. Himpsel, J. E. Ortega, G. J. Mankey y R. F. Willis, Advances in Phys. 47, 511 (1998). R

 38.      " Quantum-Well States and Interface Quality in Cu/Co(100)/Cu(100) system", P. Segovia, E. G. Michel y J. E. Ortega, Surf. Sci. 402-404, 377 (1998). A

 39.      "Quantum-Well States in high-quality Cu films deposited on Co(100): a high resolution photoemission study", P. Segovia, E. G.  Michel y J. E. Ortega, J. Vac Sci. Technol. A 16, 1368 (1998). A

 40.      "Low temperature deposition of Co on Cu(111): effects on step etching", S. Speller, S. Degroote, J. Dekoster, G. Langouche,   J. E. Ortega y A. Närmann, Surf. Sci. Lett. 405, L542 (1998). A

 41.      "Interface and bulk effects in the attenuation of low energy electrons through CaF2 thin films", J. E. Ortega, F. J. García de Abajo, P. M. Echenique, I. Manke, T. Kalka, M. Dähne, D. Ochs, S. L. Molodtsov y A. Rubio" Phys. Rev. B 58, 2233 (1998). A

 42.       “ Short wavelength, spin-polarized quantum well states in high quality Cu films on fcc-Co(100)”, J. E. Ortega, A. Närmann, K. Altmann, W. O’Brien, D. J. Seo, F. J. Himpsel, P. Segovia, A. Mascaraque y E. G. Michel, J. Magn. Magn. Mat. 203, 126 (1999). A

 43.      “Resonant Quantum Well States in thin Cu films on fcc-Co(100)”, P. Segovia, A. Mascaraque, E. G. Michel, A. Närmann y J. E. Ortega, Surf. Sci. 433, 425 (1999). A

 44.      “Spin-Polarized Quantum Well States”, K. Altmann, W. O’Brien, D. J. Seo, F. J. Himpsel, J. E. Ortega, A. Närmann, P. Segovia, A. Mascaraque y E. G. Michel, J. Elect. Spectrosc. 101-103, 367 (1999). A

 45.      “Fe thin-film growth on Au(100): a self-surfactant effect and its limitations”, V. Blum, Ch. Rath, S. Müller, L. Hammer, K. Heinz, J. M. García, J. E. Ortega, J. E. Prieto, O. S. Herrán, J. M. Gallego, A. L. Vázquez de Parga y R. Miranda, Phys. Rev. B 59, 15966 (1999). A

 46.      “Electronic States in Magnetic Nanostructures”, F. J. Himpsel, K. N. Altmann, G. J. Mankey, J. E. Ortega y D. Y. Petrovykh, J. Magn. Magn. Mat. 200, 456 (1999). A

 47.      “Quantum-state engineering on its metal”, J. E. Ortega, Physics World 12, 20 (1999). A

 48.      “The electron wave function at a vicinal surface: Switch from terrace to step modulation”, J. E. Ortega, S. Speller, A. Bachmann, A. Mascaraque, E. G. Michel, A. Mugarza, A. Närmann, A. Rubio, and F. J. Himpsel,  Phys. Rev. Lett. 84, 6110 (2000). A

 49.      “Confinement effects in the wave vector broadening in magnetic quantum wells”, A. Mugarza, J. E. Ortega, A. Mascaraque, E. G. Michel, K. N. Altmann, and F. J. Himpsel, Phys. Rev. B 62, 12 672 (2000). A

 50.      “Transition from terrace to step modulation in the surface state wave function at vicinal Cu(111)” J. E. Ortega, A. Mugarza, A. Närmann, A. Rubio, S. Speller, A. R. Bachmann, J. Lobo, E. G. Michel, and F. J. Himpsel, Surf. Sci. 482-485, 764 (2001). A

 51.      “Probing unoccupied bulk bands via the cross section of quantum well states in thin films”, A Mugarza, J. E. Ortega, A. Mascaraque, E. G. Michel, K. N. Altmann, and F. J. Himpsel, Surf. Sci. 482-485, 464 (2001). A

 52.      “One-dimensional Ag-Cu superlattices on vicinal Cu(111)”, A. R. Bachmann, A. Mugarza, S. Speller y J. E. Ortega, Phys. Rev. B 64, 153409 (2001). A

 53.      “Electron confinement in Surface States on a Stepped Gold Surface Revealed by Angle-Resolved Photoemission”, A. Mugarza, A. Mascaraque, V. Pérez-Dieste, V. Repain, S. Rousset, F. J. García de  Abajo y J. E. Ortega, Phys. Rev. Lett 87, 107601 (2001). A

 54.      “One-dimensional versus two-dimensional surface states at stepped Au(111)”, J. E. Ortega, A. Mugarza, V. Pérez-Dieste, V. Repain, S. Rousset, y A. Mascaraque, Phys. Rev. B 65, 165413 (2002). A

 55.      “Confining versus propagating electrons at step superlattices”, J. E. Ortega, A. Mugarza, V. Pérez-Dieste, V. Repain, S. Rousset, and A. Mascaraque, Materials Science and Engineering B 96, 153 (2002). A

 56.       “Ag-induced zero- and one-dimensional nanostructures on vicinal Si(111)”, J. Kuntze, A. Mugarza, y J. E. Ortega, Appl. Phys. Lett. 81, 2463 (2002). A

 57.      “Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission”, A. Mugarza, A. Mascaraque, V. Repain, S. Rousset, K. N. Altmann, F. J. Himpsel, Yu. M. Koroteev, E. V. Chulkov, F. J. García de Abajo, y J. E. Ortega, Phys. Rev. B 66, 245419 (2002). A

 58.      “Driving forces for Ag-induced nanostructuration on vicinal Cu(111)”, A. R. Bachmann, S. Speller, A. Mugarza, and J. E. Ortega, Surf. Sci. 526, L143 (2003).A

 59.      “Measurement of electron wave functions and confining potentials via photoemission”, A. Mugarza, J. E. Ortega , F. J. Himpsel y F. J. García de Abajo, Phys. Rev. B 67, 081404 (2003). A

 60.      “Surface electronic structure of a vicinal Cu crystal”, J. Lobo, E. G. Michel, A. Bachmann, S. Speller, L. Roca, J. Kuntze, and J. E. Ortega, J. Vac. Sci. Technol. A 21, 1194 (2003). A

 61.      “Electronic States at Vicinal Surfaces”, A. Mugarza and J. E. Ortega, J. Phys. Cond. Mat. 15, S3281 (2003). R

 62.       “Accurate band mapping via photoemission from thin films” A. Mugarza, A. Marini, T. Strasser, W. Schattke, A. Rubio, F. J. García de Abajo, J. Lobo, E. G. Michel, J. Kuntze, y J. E. Ortega, Phys. Rev. B 69, 115422 (2004). A

 63.      “Tuning surface state dimensionality in Cu nanostripes”, J. Lobo, E. G. Michel, A. Bachmann, S. Speller, J. Kuntze, and J. E. Ortega, Phys. Rev. Lett.  93, 137602 (2004).  A

 64.      “Fermi gap stabilization of an incommensurate two-dimensional superstructure”, F. Schiller, J. Cordón, D. Vyalikh, A. Rubio, and J. E. Ortega, Phys. Rev. Lett. 94, 016103 (2005).  A

 65.      “Scattering of surface states at step edges in nanostripe arrays”, F. Schiller, J. Cordón, M. Ruiz-Osés, and J. E. Ortega, Phys. Rev. Lett 95,  066805 (2005). A

 66.      “Surface state scattering at a buried interface”, F. Schiller, R. Keyling, E. V. Chulkov, and J. E. Ortega, Phys. Rev. Lett. 95, 126402 (2005). A

 67.      “One-dimensional versus two-dimensional electronic states in vicinal surfaces”, J. E. Ortega , M. Ruiz-Osés, J. Cordón, A. Mugarza, J.Kuntze, and F. Schiller, New Journal of Phys. 7, 101 (2005) A

 68.       “Pulsed laser deposition of Co and growth of CoSi2 on Si(111)”, M. Löffler, J. Cordón, M. Weinelt, J. E. Ortega, and Th. Fauster, Appl. Phys. A 81, 1651 (2005). A

 69.      “Finite size effects in surface states of stepped Cu nanostripes”, J. E. Ortega, M. Ruiz-Osés, and J. Kuntze, Phys. Rev. B 72, 195416 (2005). A

 70.      “Modeling nanostructures with vicinal surfaces”, A. Mugarza, F. Schiller, J. Kuntze, J. Cordón, M. Ruiz-Osés, and J. E. Ortega , J. of Phys. C (in press).

 71.      “Schiller et al. Reply”, F. Schiller, J. Cordón, D. Vyalikh, A. Rubio, and J. E. Ortega, Phys. Rev. Lett. 96, 029702 (2006).

 

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