John Freeland

Argonne National Laboratory
9700 S. Cass Ave
431/E004
Argonne, Il 60439

Phone: 252-9614

Fax: 252-7392

E-Mail: freeland@aps.anl.gov

Education/Experience:

  • 1998 - present:   Staff Scientist, Advanced Photon Source, Argonne National Laboratory, Argonne, IL
  • 2001 - present:   Adjunct Faculty, Department of Physics, Northern Illinois University
  • 1996 - 1998:   National Research Council (NRC) Fellow Naval Research Laboratory
  • The Johns Hopkins University; Ph. D in Physics, 1996
  • Beloit College, Beloit, WI; B.S. in Physics, 1990

Research Interests:

  • Understanding the magnetic and electronic properties of complex oxides both in the bulk and at surfaces and interfaces.

Selected Publications:

  1. V. Rose, J. W. Freeland, K. E. Gray, and S.K. Streiffer, “X-ray-excited photoelectron detection using a scanning tunneling microscope”, Appl. Phys. Lett. 92, 193510 (2008).
  2. J. Chakahlian, J.W. Freeland, H.-U. Habermeir, G. Cristaini, G. Khaliullin, M. van Veennedall, and B. Keimer,Orbital Reconstruction and Covalent Bonding at an Oxide Interface” , Science 318,1114 (2007).
  3. J. Chakalian, J. W. Freeland, G. Srajer, J. Strempfer, G. Khaliullin, J.C. Cezar, T. Charlton, R. Dalgliesh, C. Bernhard, G. Cristiani, H-U. Habermeier and B. Keimer, "Magnetism at the Interface Between Ferromagnetic and Superconducting Oxides", Nature Physics 2, 244 (2006).
  4. J. W. Freeland, K.E. Gray, L. Ozyuzer, P. Berghuis, E. Badica, J. Kavich, H. Zheng, and J. F. Mitchell, "Full Bulk Spin Polarization and Intrinsic Tunnel Barriers at the Surface of Layered Manganites", Nature Materials 4, 62 (2005).
  5. J. W. Freeland, R. H. Kodama, M. Vedpathak, S.C. Erwin, D.J. Keavney, R. Winarski, P. Ryan, and R.A. Rosenberg, "Induced Ge Spin Polarization at the Fe/Ge Interface", Phys. Rev. B 70, 033201 (2004).
  6. J.W. Freeland, D.J. Keavney, R. Winarski, P. Ryan, J.M. Slaughter, R.W. Dave, and J. Janesky, "Grain Boundary Mediated Oxidation and Interlayer Dipolar Coupling in a Magnetic Tunnel Junction Structure", Phys. Rev. B 67, 134411 (2003).
  7. D.J. Keavney, D.Wu, J.W. Freeland, E. Johnston-Halperin, D.D. Awschalom, and J. Shi, "Element Resolved Spin Configuration in Ferromagnetic Manganese-Doped Gallium Arsenide", Phys. Rev. Lett. 91, 187203 (2003).
  8. L.Seve, W. Zhu, B. Sinkovic, J.W. Freeland, I Coulthard, W.J. Antel Jr., and S.S.P Parkin, "Observation of Change in the Oxidation State at Ferromagnet/Insulator Interface Upon Thermal Annealing", Euro. Phys. Lett. 55, 439, (2001).
  9. J.W. Freeland, I. Coulthard, W.J. Antel Jr, and A.P.J. Stampfl, "Interface Bonding for Fe Thin Films on GaAs Surfaces of Differing Morphology”, Phys. Rev. B. 63,193301, (2001).
  10. J.W. Freeland, K. Bussmann, Y. U. Idzerda, "Connecting Disorder and Magnetic Properties in CoFe Thin Films", Appl. Phys. Lett., 76, 2603, (2000).
  11. J.W. Freeland, K. Bussmann, Y.U. Idzerda, and C.-C. Kao, "Understanding Correlations Between Chemical and Magnetic Interfacial Roughness", Phys. Rev. B 60, R9923 (1999).

 


Posted by: Becki Gagnon ( gagnon@aps.anl.gov)
Content by: John Freeland ( freeland@aps.anl.gov)