Lawrence Livermore National Laboratory



Jae-Hyun Park Klepeis

Research Staff
Physics Division


 +1 925-424-6662


DegreeDiscipline/InstitutionYear
Ph.D.
State University at New York at Stony Brook

Research Interests

My research interest is crystallography regarding the structure-property relationship. Since pressure is a well-known parameter to change the bond distance and band structure simultaneously I am focused on phase transitions of various systems, d- and f-metals (non-classified subjects) and their compounds, and molecular systems (components of planetary ices). Understanding the mechanism among the series of structures in transitions is my primary goal. So far I have studied synchrotron X-ray and neutron powder diffraction. In the future I plan to pursue single crystal diffraction studies.

I also use Raman spectroscopy as a complimentary tool in the laboratory. To perform high temperature research, laser heating and resistive heating are also adopted in collaboration with my research group members.

Selected Publications

  1. C. S. Yoo, B. Maddox, J. -H. P. Klepeis, V. Iota, W. Evans, A. McMahan, M. Hu, P. Chow, M. Somayazulu, D. Hausermann, R. T. Scalettar, and W. E. Pickett, "First-order Isostructural Mott transition in highly compressed MnO", Phys. Rev. Lett. 94(11), 115502 (2005) [pdf]
  2. V. Iota, J.-H. Park, and C.S. Yoo, (2003) "Phase Diagram of Nitrous Oxide: Analogy with Carbon Dioxide", Phys. Rev. B 69(6), 064106 (2004) [pdf]

    J.-H. Park, C.S. Yoo, V. Iota, H. Cynn, M.F. Nicol and T. LeBihan, "Crystal Structure of Bent Carbon Dioxide Phase IV", Physical Review B 68 (1), 014107 (2003) [pdf]

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