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professor

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professor

Park, Jae-Hoon professor

Current Contact Information

Department of Physics, POSTECH
HyoJa-Dong San 31
KyungBuk Pohang, Korea,
790-784 e-mail:jhp@postech.ac.kr
phone:+82-562-279-2088 fax:+82-562-279-3099

Education and Training

1985 - B.S. in Physics, SNU
1987 - M.S. in physics, SNU
1993 - Ph.D. in Physics, Department of Physics, The University of Michgan, Ann Arbor, U.S.A.

Professional Career

1999- : Assistant Professor POSTECH
1996-1999 : Assistant Scientist National Synchrotron Light Source, Brookhaven National Laboratory, Upton, NY 11973-5000, USA.,
1994-1996 : A Member of the Technical Staff Bell Labs, Lucent Technologies (formerly known as AT&T Bell Laboratories), Murray Hill, NJ 07974, USA.

Research Experiences

Electronic Structure and Magnetic Properties of Solid
Highly Correlated Systems
Ferromagnetic oxides
Magnetic materials, thin films and multilayers
Low dimensional systems

Photoemission Spectroscopy (PES)
Resonant Photoemission (RPES), Angle-resolved Photoemission (ARPES), Spin-resolved Photoemission (SRPES), etc.
X-ray Absorption Spectroscopy (XAS)
Polarized X-ray Absorption (PXAS), X-ray Absorption Magnetic Circular Dichroism (XMCD), etc
Inverse Photoemission Spectroscopy (IPES)

Academic activity

Theses
1. Jaehoon Park, "Electron Spectroscopic Studies of 3d Transition-Metal Oxides and Metal-Insulator Transirions", Ph.D. Thesis, The University of Michigan at Ann Arbor, USA. (1993).
2. Jaehoon Park, "Study for XPS 2p Satellites of Transition Metal Dihalides", Master Thesis, Seoul National University (1987).
Papers
1. J.-H. Park, T. Kimura, and Y. Tokura, "Competition between lattice distortion and charge dynamics for the charge carriers of double-layered manganites", Phys. Rev. B 58, Rapid Comm., R13330 (1998).
2. Tschang-Uh Nahm, Ranju Jung, Jae-Yong Kim, W.-G. Park, S.-J. Oh, J.-H. Park, J. W. Allen, S.-M. Chung, Y. S. Lee, and C. N. Whang, "Electronic structure of disordered Au-Pd alloys studied by electron spectroscopies", Phys. Rev. B 58, 9817 (1998).
3. J.-H. Park, E. Vescovo, H.-J. Kim, C. Kwon, R. Ramesh, and T. Venkatesan, "Magnetic Properties at Surface-boundary of a Half-metallic Ferromagnet La0.7Sr0.3MnO3 ", Phys. Rev. Lett. 81, 1953 (1998).
4. J.-H. Park, E. Vescovo, H.-J. Kim, C. Kwon, R. Ramesh, and T. Venkatesan, "Direct Evidence for a Half-metallic Ferromagnet", Nature 392, 794 (1998).
5. Y. D. Ko, Y. D. Kim, S. L. Cooper, M. V. Klein, J.-H. Park, and B. T. Jonker, "Spectroscopic Ellipsometric Observation of Charge Transfer Transitions in Zn1-xCoxSe Films", J. Korean Phys. Soc. 31, 108 (1997).
6. J. W. Freeland, V. Chakarian, Y. U. Idzerda, S. Doherty, J. G. Zhu, J.-H. Park, and C.-C. Kao, "Identification layer switching in magnetic multilayers with x-ray resonant magnetic scattering", Appl. Phys. Lett. 71, 276 (1997).
7. J.-H. Park, L. H. Tjeng, J. W. Allen, C. T. Chen, and P. Metcalf, "Single particle gap above the Verway transition", Phys. Rev. B 55, 12813 (1997).
8. J.-H. Park, S-W. Cheong, and C.T. Chen, " Double-exchange ferromagnetism in La(Mn1-xCox)O3 ", Phys. Rev. B 55, 11072 (1997).
9. Tschang-Uh Nahm, Jae-Young Kim, S.-J. Oh, S.-M. Chung, J.-H. Park, J. W. Allen, K. Jeong, and Sehun Kim, "Photoemission study of electronic structures of disordered Ni-Pt and Cu-Pt alloys", Phys. Rev. B 54, 7807 (1996).
10. V. Chakarian, Y. U. Idzerda, K. M. Kemner, J.-H. Park, G. Meigs, and C. T. Chen, " Giant magnetic effects in the L-edge EXAFS of 3d transition metals", J. Appl. Phys. 79, 6493 (1996).
11. J.-H. Park, C. T. Chen S-W. Cheong, W. Bao, G. Meigs, V. Chakarian, and Y. U. Idzerda, "Electron Spectroscopic Studies of Colossal Magnetoresistance Material La1-xCaxMnO3", J. of Appl. Phys. 79, 4558 (1996).
12. J.-H. Park, C. T. Chen S-W. Cheong, W. Bao, G. Meigs, V. Chakarian, and Y. U. Idzerda, "Electronic Aspects of the Ferromagnetic Transition of Manganese Perovskites", Phys. Rev. Letters. 76, 4215 (1996).
13. V. Chakarian, H.-J. Lin, Y. U. Idzerda, E. E. Chaban, G. Meigs, J.-H. Park, and C. T. Chen, "Element-Specific Vetor Magnetometry (ESVM) via soft x-ray magnetic circular dichroism", Mater. Res. Soc. Proc. 375 (1995).
14. V. Chakarian, Y. U. Idzerda, G. Meigs, E. E. Chaban, J.-H. Park, and C. T. Chen, "Element-Specific Vetor Magnetometry with Magnetic Circular Dichroism", Appl. Phys. Lett. 66, 3368 (1995).
15. Tschang-Uh Nahm, Moonsup Han, S.-J. Oh, J.-H. Park, J. W. Allen, and S.-M. Chung, "Partial spectral weights of disordered CuxPd1-x alloys including the photoemission matrix-element effect", Phys. Rev. B 51, 8140 (1995).
16. J. W. Allen, R. Claessen, R. O. Anderson, W. P. Ellis, C. Janowitz, C. G. Olson, J.-H. Park, L. H. Tjeng, C. T. Chen, P. Metcalf, H. R. Harrison, M. C. de Andrade, E. A. Early, S. Harm, R. F. Jardin, M. Kalning, L. Z. Liu, R. Manzke, M. B. Maple, S.-J. Oh, and M. Skibowski, "Electron Spectroscopy and Hubbard : Issues and Opportunities", Proceedings of the NATO Advanced Workshop on "The Physics and Mathematical Physics of the Hubbard Model", San Sebastian (E), Oct. 3-8, 1993, edited by D. Baeriswyl et al. (Plenum Press, New York), pp357-372 (1995).
17. J.-H. Park, L. H. Tjeng, J. W. Allen, R. Claessen, C. T. Chen, P. Metcalf, and H. R. Harrisson, "Materials Systematics and Insulator to Metal Transitions in 3d Transition Metal Oxides", Proceedings of Workshop on Transition Metal Oxides; held Dec. 13-15, 1993, in Hakone, Japan; sponsored by the National Research Institute of Metal and the Science and Technology Agency of Japan. 18. Y. D. Kim, S. L. Cooper, M. V. Klein, J.-H. Park, and B. T. Jonker, "Spectroscopic ellipsometry study of Zn1-xCoxSe alloys grown on GaAs", Phys. Rev. B 50, 10637 (1994).
19. J. F. Ditusa, S-W. Cheong, J.-H. Park, G. Aeppli, C. Broholm, and C. T. Chen, "Magnetic and Charge Dynamics in a Doped One-Dimensional Transition Metal Oxide", Phys. Rev, Letters 73, 1857 (1994).
20. L. H. Tjeng, S.-J. Oh, E.-J. Cho, H.-J. Lin, C. T. Chen, G.-H. Gweon, J.-H. Park, J. W. Allen, "Temperature Dependence of the Kondo Resonance in YbAl3", Phys. Rev. Letters 71, 1419 (1993).
21. J.-S. Kang, W. Y. Lee, C. J. Yang, Y. P. Lee, C. G. Olson, R. O. Anderson, L. Z. Liu, J.-H. Park, J. W. Allen, "Photoemission Study of SmCo2", Phys. Rev. B 48, 10327 (1993).
22. Tschang-Uh Nahm, Moonsup Han, S.-J. Oh, J.-H. Park, J. W. Allen, and S.-M. Chung, "Influence of matrix element effect in determining density of states from photoemission spectra : Cu-Pd alloy ", Phys. Rev. Letters 70, 3663 (1993).
23. R. O. Anderson, R. Claessen, J. W. Allen, C. G. Olson, C. Janowitz, L. Z. Liu, J.-H. Park, M. B. Maple, Y. Dalichaouch, M. C. de Andrade, R. F. Jardim, E. A. Early, S.-J. Oh, W. P. Ellis, "Luttinger Fermi Surface of Metallic Gap Spectral Weight in Nd1.85Ce0.15CuO4-y", Phys. Rev. Letters 70, 3163 (1993).
24. En-Jin Cho, S.-J. Oh, C. G. Olson, J.-S. Kang, R. O. Anderson, L. Z. Liu, J.-H. Park, and J. W. Allen, "High Resolution Photoemission Study of YbAl3 at Low Temperature", Physica B 186-188 70 (1993).
25. J. W. Allen, L. Z. Liu, R. Claessen, R. O. Anderson, J.-H. Park, J.-S. Kang, C. L. Seaman, M. B. Maple, Y. Dalichaouch, M. L. Lopez de la Torre, C. G. Olson, W. P. Ellis, and M. S. Torikachvilli, "Electron Spectroscopy of Strongly Correlated Materials - Recent Issues and Results", Int. J. Mod. Phys. B 6, 5 (1992).
26. O. Gunnarsson, J. W. Allen, O. Jepsen, T. Fujiwara, O. K. Anderson, C. G. Olson, M. B. Maple, J.-S. Kang, L. Z. Liu, J.-H. Park, R. O. Anderson, W. P. Ellis, J. T. Markert, Y. Dalichaouch, Z.-X. Shen, P. A. P. Lindberg, B. O. Wells, D. S. Dessau, A. Borg, I. Lindau, and W. E. Spicer, "Polarized resonance photoemission for Nd2CuO4", Phys. Rev. B (Rapid Commun.) 41, 4811 (1990).
27. J. W. Allen, C. G. Olson, M. B. Maple, J.-S. Kang, L. Z. Liu, J.-H. Park, R. O. Anderson, W. P. Ellis, J. T. Markert, Y. Dalichaouch, and R. Liu, "Resonant Photoemission Study of Nd2-xCexCuO4-y : Nature of Electronic States near the Fermi Level", Phys. Rev. Letters, 64, 595 (1990).
28. Jaehoon Park, Seungoh Ryu, Moon-sup Han, and S.-J. Oh, "Charge-transfer satellites in the 2p core-level photoemission spectra of heavy-transition-metal dihalides", Phys. Rev. B 37, 10867 (1988).
Invited Presentations in International Conferences
1. J.-H. Park, "Electronic Structure and Half-metallicity of Manganese Perovskites", Advanced-Topics Research School "Science and Technology of Magnetic Oxides-99", La Jolla, USA (1999).
2. J.-H. Park, "Electron spectroscopies on Manganese Perovskites: Half-metallicity and Surface boundary magnetization", MRS Meeting, Boston, USA (1998).
3. J.-H. Park, "Electron spectroscopies on Manganese Perovskites: Half-metallicity & Surface boundary magnetization", Gorden conference of Electron spectroscopy, New England, USA (1998).
4. J.-H. Park, "Spin Resolved Photoemission and Magnetic Circular Dichroism", Summer School on Surface and Interface Magnetism, Yonsei University, Republic of Korea (1998).
5. J.-H. Park, "Electron spectroscopies on manganites: Half-metallicity and charge characterization", 3rd JRCAT workshop, Phase control of colossal magnetoresistive oxides (1998).
6. J.-H. Park, "Half-metallicity and temperature dependent spin anisotropy of a manganese perovskite, La0.7Sr0.3MnO3", March APS Meeting at Los Angeles, USA (1998).
7. J.-H. Park, "Elecronic Aspect of Ferromagnetic Transition in Manganese Perovskite", NSLS Users Meeting at Brookhaven National Laboratory, USA (1996).

Honors and Awards