Seoul National Univ. DMSE


Han, Seungwu
  • 2000

    Ph.D : Seoul National University, Department of Physics

  • 1995

    M.S : Seoul National University, Department of Physics

  • 1993

    B.S : Seoul National University, Department of Physics

  • 2000-2001

    Center for Strongly Correlated Materials Research, Seoul National University, Post Doctoral Research Scientist

  • 2001-2003

    Princeton Materials Institute, Princeton University, Post Doctoral Research Scientist

  • 2003-2009

    Ewha Womans U Department of Physics, Professor

  • 2009-present

    Seoul National University, Department of Materials Science and Engineering, Associate Professor

Research Interests
1. Memory devices* PRAM : Modeling of PRAM resistance drift based on first principles
* ReRAM : Quantum simulations to enhance ReRAM reliability
* DRAM : Simulations on gate stacked structures for next generation DRAM2. Materials for display* Microscopic characterization of In-Ga-Zn-O using first principles calculations3. Energy materials for fuel cell* First principles study of catalytic materials (LaMnO3 , CeO2, etc) as cathode and electrolyte4. Industrial utilization of advanced materials* Computational simulations on the large scale atomic/molecular deposition of graphene
* Research on the correlation between mechanical stress and carrier transport in graphene surface layers
Selected Publications
1. Papers* "Enhanced amorphous stability of carbon-doped Ge2Sb2Te5: Ab initio investigation", Appl. Phys. Lett., 99, 183501 (2011)
* "Capacitors with an equivalent oxide thickness of < 0.5 nm for nanoscale electronic semiconductor memory", Adv. Funct. Mater., 20, 2989 (2010)
* "Atomic structure of conducting nano-filaments in TiO2 resistive switching memory", Nat. Nanotechnol., 5, 148 (2010)
* "Electrical manipulation of nano-filaments in transition metal oxides for resistance based memory", Nano Lett., 9, 1476 (2009)
* "Density and spatial distribution of charge carriers in the intrinsic n-type LaAlO3-SrTiO3 interface , Phys. Rev. B, 79, 245411 (2009)
* "Electronic structure tailoring and selective adsorption mechanism of metal-coated nanotubes", Nano Lett., 8, 81 (2008)
* "Segregation of oxygen vacancy at metal-HfO2 interfaces", Appl. Phys. Lett., 92, 233118 (2008)
* "Oxygen vacancy clustering and electron localization in oxygen-deficient SrTiO3: LDA+U study", Phys. Rev. Lett., 98, 115503 (2007)
[Total of 95 publications in SCI journals]
Lab Overview
1. Characterization of the physical properties of PRAM materials and device performance anticipation* Research on the atomic and electronic structure of amorphous Ge2Sb2Te52. Developing transparent electrodes* Modeling of amorphous InGaZnO4 and its structural changes according to defect incorporation3. Research of cathode catalyst materials for fuel cell* Understanding electronic structure of LaMnO4 using first principle calculation