한승우
Han, Seungwu
- Email : hansw@snu.ac.kr
- Mailstop : 33-319
- Phone : 880-7088
- Fax : 885-9671
- Homepage : https://mdil.snu.ac.kr
Education
Ph.D : Seoul National University, Department of Physics
M.S : Seoul National University, Department of Physics
B.S : Seoul National University, Department of Physics
Career
Center for Strongly Correlated Materials Research, Seoul National University, Post Doctoral Research Scientist
Princeton Materials Institute, Princeton University, Post Doctoral Research Scientist
Ewha Womans U Department of Physics, Professor
Seoul National University, Department of Materials Science and Engineering, 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